#include <bits/stdc++.h>
using namespace std;
#ifndef M
#define M 1000000007
#endif
typedef pair<int,int>pp;
typedef std::vector<pp> vpp;
typedef long long ll;
#ifndef pb
#define pb push_back
#endif
int min(int x,int y){return(x<y)?x:y;}
int max(int x,int y){return(x>y)?x:y;}
int main()
{
int t;
scanf("%d",&t);
while(t--)
{
int n,m;
scanf("%d %d",&n,&m);
for(int i=1;i<m;++i)
printf("%d ",2*n);
printf("%d\n",3*n);
}
return 0;
}
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