//Varun
#include "bits/stdc++.h"
using namespace std;
#define si(x) scanf("%d",&x)
#define sll(x) scanf("%I64d",&x)
#define pb push_back
#define gcd(a,b) __gcd(a,b)
#define F first
#define S second
#define SETBITS(x) __builtin_popcount(x)
#define ALL(x) (x).begin(),(x).end()
#define REP(a,b) for(int i=a;i<b;i++)
#define REP2(a,b,c) for(int i=a;i<b;i+=c)
#define fastscan ios::sync_with_stdio(0),cin.tie(0),cout.tie(0)
#define debug(x) cerr<<#x<<" is "<<x<<endl
#define INF INT_MAX
#define N_INF INT_MIN
typedef long long ll;
typedef vector<int> vi;
typedef vector<ll> vll;
typedef pair<int,int> pi;
typedef pair<ll,ll> pll;
#define TRACE
#ifdef TRACE
#define trace(...) __f(#__VA_ARGS__, __VA_ARGS__)
template <typename Arg1>
void __f(const char* name, Arg1&& arg1){
cerr << name << " : " << arg1 << std::endl;
}
template <typename Arg1, typename... Args>
void __f(const char* names, Arg1&& arg1, Args&&... args){
const char* comma = strchr(names + 1, ',');cerr.write(names, comma - names) << " : " << arg1<<" | ";__f(comma+1, args...);
}
#else
#define trace(...)
#endif
const ll mod = 1e9+7;
const ll maxn = 2e5+5;
std::vector<ll>g[maxn];
ll dfs_par[maxn];//for cycle detection
ll cyc_par[maxn];//to store root of each cycle
ll vis[maxn];//1st dfs
pll in[maxn], out[maxn];
ll dfn[maxn];
ll num = 0;
pll merge(pll a, pll b, ll x, ll y){
// if(x == 8){
// cout << y << b.F << b.S << "\n";
// }
if(cyc_par[x] == cyc_par[y]){
return {a.F, a.S+b.F};
}
else{
return {a.F+b.F, a.S+b.S};
}
}
pll unmerge(pll a, pll b, ll x, ll y){
if(cyc_par[x] == cyc_par[y]){
a.S -= b.F;
}
else{
a.F -= b.F, a.S -= b.S;
}
return a;
}
void dfs(ll start, ll pre){
//trace(start, pre);
if(vis[start] == 0){
dfn[start] = num++;
}
vis[start]++;
for(ll i = 0; i < g[start].size(); ++i){
ll child = g[start][i];
if(child == pre)continue;
if(vis[child] >= 2)continue;
else if(vis[child] == 0){
dfs_par[child] = start;
dfs(child, start);
}
else{
ll dum=start;
while(cyc_par[dum] != child){
cyc_par[dum] = child;
dum = dfs_par[dum];
}
}
}
vis[start]++;
}
void dfs_in(ll start, ll pre){
//trace(start, pre);
vis[start]++;
in[start] = {1, 0};
ll back = -1;
for(auto child : g[start]){
if(child == pre)continue;
if(vis[child] == 0){
dfs_in(child, start);
in[start] = merge(in[start], in[child], start, child);
}
else if(vis[child] == 1){
back = child;
}
}
if(back != -1){
in[back] = merge(in[back], in[start], back, start);
}
vis[start]++;
}
void dfs_out(ll start, ll pre){
vis[start]++;
out[start] = {1, 0};
if(pre != 0){
out[start] = merge(out[start], out[pre], start, pre);
for(auto sibling : g[pre]){
ll count = 0;
if(sibling == start)continue;// or sibling == dfs_par[pre])continue;
if(cyc_par[start] == cyc_par[pre])++count;
if(cyc_par[pre] == cyc_par[sibling])++count;
if(count == 2)continue;
if(dfs_par[sibling] == pre){
if(count){
out[start] = merge(out[start], {0, in[sibling].F}, start, 0);
}
else
out[start] = merge(out[start], in[sibling], start, sibling);
}
}
}
for(auto child : g[start]){
if(child == pre)continue;
if(dfn[child] < dfn[start]){
out[start] = merge(out[start], out[child], start, child);
break;
}
}
for(auto child : g[start]){
if(child == pre)continue;
if(vis[child] == 0){
dfs_out(child, start);
}
}
vis[start]++;
}
ll ans(ll a, ll b){
if(dfs_par[a] == b){
swap(a, b);
}
pll x = in[b];
pll y = {0, 0};
for(auto sibling : g[a]){
ll count = 0;
if(sibling == b or sibling == dfs_par[a])continue;
//if(dfs_par[sibling] == a){
if(dfn[sibling] > dfn[a] and dfn[sibling] != dfn[b]){
if(cyc_par[b] == cyc_par[a])count++;
if(cyc_par[a] == cyc_par[sibling])++count;
if(count == 2)continue;
if(count == 1)
y = merge(y, {0, in[sibling].F}, a, 0);
else
y = merge(y, in[sibling], a, sibling);
}
}
//pll x = in[b];
//pll y = unmerge(in[a], in[b], a, b);
//y = unmerge(y, {1, 0}, a, 0);
y = merge(y, out[a], a, b);
// if(b == 8)
// trace(y.F, y.S);
// if(cyc_par[a] == cyc_par[b]){
// return 1LL*x.F*y.F;
// }
// else{
return x.F*y.F + x.S*y.F + x.F*y.S;
//}
}
std::vector<pll> edges;
int main()
{
#ifndef ONLINE_JUDGE
freopen("input.txt", "r", stdin);
freopen("output.txt", "w", stdout);
#endif
fastscan;
ll t;
cin >> t;
while(t--){
ll n, m;
num = 0;
cin >> n >> m;
edges.clear();
for(ll i = 0; i <= n; ++i){
g[i].clear();
dfs_par[i] = 0;
cyc_par[i] = i;
vis[i] = 0;
}
for(ll i = 0; i < m; ++i){
ll u, v;
cin >> u >> v;
g[u].pb(v);
g[v].pb(u);
edges.pb({u, v});
}
vis[0] = 1;
for(ll i = 1; i <= n; ++i){
if(!vis[i]){
dfs(i, 0);
dfs_par[i] = 0;
// for(int j = 1; j <= n; ++j){
// cout << cyc_par[j] <<'\n';
// }
// cout << '\n';
for(int i = 0; i <= n; ++i)vis[i] = 0;
vis[0] = 1;
dfs_in(i, 0);
// for(int j = 1; j <= n; ++j){
// cout << in[j].F << " " << in[j].S <<'\n';
// }
// cout <<"\n\n\n\n";
for(int i = 0; i <= n; ++i)vis[i] = 0;
vis[0] = 1;
dfs_out(i, 0);
// for(int j = 1; j <= n; ++j){
// cout << out[j].F << " " << out[j].S <<'\n';
// }
}
}
//trace(out[8].F, out[8].S);
// for(int i = 1; i <= n; ++i){
// cout << dfn[i] << " ";
// }
//cout << "\n";
for(ll i = 0; i < edges.size(); ++i){
cout << ans(edges[i].F, edges[i].S) << "\n";
}
}
return 0;
}
/*
Input
1
14 14
1 2
2 3
3 4
4 1
4 5
5 6
6 7
7 5
6 8
6 9
8 10
10 11
11 12
12 13
13 14
*/
/*
Expected Output
1
1
2
2
11
14
7
2
25
9
24
21
16
9
*/
//Varun
#include "bits/stdc++.h"
using namespace std;
#define si(x) scanf("%d",&x)
#define sll(x) scanf("%I64d",&x)
#define pb push_back
#define gcd(a,b) __gcd(a,b)
#define F first
#define S second
#define SETBITS(x) __builtin_popcount(x)
#define ALL(x) (x).begin(),(x).end()
#define REP(a,b) for(int i=a;i<b;i++)
#define REP2(a,b,c) for(int i=a;i<b;i+=c)   
#define fastscan ios::sync_with_stdio(0),cin.tie(0),cout.tie(0)
#define debug(x) cerr<<#x<<" is "<<x<<endl
#define INF INT_MAX
#define N_INF INT_MIN
typedef long long ll;
typedef vector<int> vi;
typedef vector<ll> vll;
typedef pair<int,int> pi;
typedef pair<ll,ll> pll;
        
#define TRACE

#ifdef TRACE
#define trace(...) __f(#__VA_ARGS__, __VA_ARGS__)
template <typename Arg1>
void __f(const char* name, Arg1&& arg1){
  cerr << name << " : " << arg1 << std::endl;
}
template <typename Arg1, typename... Args>
void __f(const char* names, Arg1&& arg1, Args&&... args){
  const char* comma = strchr(names + 1, ',');cerr.write(names, comma - names) << " : " << arg1<<" | ";__f(comma+1, args...);
}
#else
#define trace(...)
#endif

const ll mod = 1e9+7;
const ll maxn = 2e5+5;

std::vector<ll>g[maxn];

ll dfs_par[maxn];//for cycle detection
ll cyc_par[maxn];//to store root of each cycle
ll vis[maxn];//1st dfs
pll in[maxn], out[maxn];
ll dfn[maxn];
ll num = 0;

pll merge(pll a, pll b, ll x, ll y){
    // if(x == 8){
    //  cout << y << b.F << b.S << "\n";
    // }
    if(cyc_par[x] == cyc_par[y]){
        return {a.F, a.S+b.F};
    }
    else{
        return {a.F+b.F, a.S+b.S};
    }
}

pll unmerge(pll a, pll b, ll x, ll y){
    if(cyc_par[x] == cyc_par[y]){
        a.S -= b.F;
    }
    else{
        a.F -= b.F, a.S -= b.S;
    }
    return a;
}

void dfs(ll start, ll pre){
    //trace(start, pre);
    if(vis[start] == 0){
        dfn[start] = num++;
    }
    vis[start]++;
    for(ll i = 0; i < g[start].size(); ++i){
        ll child = g[start][i];
        if(child == pre)continue;

        if(vis[child] >= 2)continue;

        else if(vis[child] == 0){
            dfs_par[child] = start;
                dfs(child, start);
        }

        else{
            ll dum=start;
            while(cyc_par[dum] != child){
                cyc_par[dum] = child;
                dum = dfs_par[dum];
            }
        }
    }
    vis[start]++;
}

void dfs_in(ll start, ll pre){
    //trace(start, pre);
    vis[start]++;
    in[start] = {1, 0};

    ll back = -1;
    for(auto child : g[start]){
        if(child == pre)continue;
        if(vis[child] == 0){
            dfs_in(child, start);
            in[start] = merge(in[start], in[child], start, child);
        }
        else if(vis[child] == 1){
            back = child;
        }
    }
    if(back != -1){
        in[back] = merge(in[back], in[start], back, start);
    }
    vis[start]++;
}

void dfs_out(ll start, ll pre){
    vis[start]++;

    out[start] = {1, 0};


    if(pre != 0){
        out[start] = merge(out[start], out[pre], start, pre);
        for(auto sibling : g[pre]){
            ll count = 0;

            if(sibling == start)continue;// or sibling == dfs_par[pre])continue;

            if(cyc_par[start] == cyc_par[pre])++count;
            if(cyc_par[pre] == cyc_par[sibling])++count;

            if(count == 2)continue;

            if(dfs_par[sibling] == pre){
                if(count){
                    out[start] = merge(out[start], {0, in[sibling].F}, start, 0);
                }
                else
                    out[start] = merge(out[start], in[sibling], start, sibling);
            }
        }
    }

    for(auto child : g[start]){
        if(child == pre)continue;
        if(dfn[child] < dfn[start]){
            out[start] = merge(out[start], out[child], start, child);
            break;
        }
    }

    for(auto child : g[start]){
        if(child == pre)continue;
        if(vis[child] == 0){
            dfs_out(child, start);
        }
    }
    vis[start]++;
}

ll ans(ll a, ll b){
    if(dfs_par[a] == b){
        swap(a, b);
    }

    pll x = in[b];
    pll y = {0, 0};

    for(auto sibling : g[a]){
            ll count = 0;

            if(sibling == b or sibling == dfs_par[a])continue;

            //if(dfs_par[sibling] == a){
            if(dfn[sibling] > dfn[a] and dfn[sibling] != dfn[b]){
                       if(cyc_par[b] == cyc_par[a])count++;
                       if(cyc_par[a] == cyc_par[sibling])++count;
                       if(count == 2)continue;
            
                       if(count == 1)
                         y = merge(y, {0, in[sibling].F}, a, 0);
            
                       else
                          y = merge(y, in[sibling], a, sibling);
                    }
    }

    //pll x = in[b];
    //pll y = unmerge(in[a], in[b], a, b);
    //y = unmerge(y, {1, 0}, a, 0);
    y = merge(y, out[a], a, b);
    // if(b == 8)
        //  trace(y.F, y.S);
    // if(cyc_par[a] == cyc_par[b]){
    //  return 1LL*x.F*y.F;
    // }
    // else{
        return x.F*y.F + x.S*y.F + x.F*y.S;
    //}
}

std::vector<pll> edges;

int main()
{
    #ifndef ONLINE_JUDGE
        freopen("input.txt", "r", stdin);
        freopen("output.txt", "w", stdout);
    #endif

    fastscan;


    ll t;
    cin >> t;
    while(t--){
        ll n, m;
        num = 0;
        cin >> n >> m;
        edges.clear();
        for(ll i = 0; i <= n; ++i){
            g[i].clear();
            dfs_par[i] = 0;
            cyc_par[i] = i;
            vis[i] = 0;
        }



        for(ll i = 0; i < m; ++i){
            ll u, v;
            cin >> u >> v;
            g[u].pb(v);
            g[v].pb(u);
            edges.pb({u, v});
        }
        vis[0] = 1;
        for(ll i = 1; i <= n; ++i){
            if(!vis[i]){
                dfs(i, 0);
                dfs_par[i] = 0;
                 // for(int j = 1; j <= n; ++j){
                 //     cout << cyc_par[j] <<'\n';
                 // }
                 // cout << '\n';
                    for(int i = 0; i <= n; ++i)vis[i] = 0;
                    vis[0] = 1;
                dfs_in(i, 0);
                 // for(int j = 1; j <= n; ++j){
                 //     cout << in[j].F << " " << in[j].S <<'\n';
                 // }
                 // cout <<"\n\n\n\n";
                    for(int i = 0; i <= n; ++i)vis[i] = 0;
                    vis[0] = 1;
                dfs_out(i, 0);
                 // for(int j = 1; j <= n; ++j){
                 //     cout << out[j].F << " " << out[j].S <<'\n';
                 // }
            }           
        }

        //trace(out[8].F, out[8].S);                
        
        // for(int i = 1; i <= n; ++i){
        //       cout << dfn[i] << " ";
        // }
        //cout << "\n";

        for(ll i = 0; i < edges.size(); ++i){
            cout << ans(edges[i].F, edges[i].S) << "\n";
        }
    }
    return 0;
}

/* 
Input
1
14 14
1 2
2 3
3 4
4 1
4 5
5 6
6 7
7 5
6 8
6 9
8 10
10 11
11 12
12 13
13 14
*/

/*
Expected Output
1
1
2
2
11
14
7
2
25
9
24
21
16
9
*/