/*
ID: untamed
PROG: DICE1
LANG: C++
*/
#include<cstdio>
#include<iostream>
#include<algorithm>
#include<string>
#include<cstring>
#include<vector>
#include<stack>
#include<queue>
#include<deque>
#include<map>
#include<set>
#include<limits>
#include<climits>
#include<cmath>
#include<functional>
#include<ctime>
#include<cstdlib>
#include<fstream>
#include<typeinfo>
const int ONE = 1<<10;
const int TWO = 1<<11;
const int FOUR = 1<<12;
const int EIGHT = 1<<13;
const int SIXTEEN = 1<<14;
const int THIRTY = 1<<15;
const int SIXTY = 1<<16;
const int ONE_HUNDRED = 1<<17;
const int TWO_HUNDRED = 1<<18;
const int FIVE_HUNDRED = 1<<19;
const int MILLION = 1<<20;
using namespace std;
typedef long long int ll;
typedef short int i16;
typedef unsigned long long int u64;
typedef unsigned int u32;
typedef unsigned short int u16;
typedef unsigned char u8;
const int MOD = 100000007;
int f(int p)
{
if(p<0)
return 0;
return p;
}
int n,k,s;
int state[2][SIXTEEN];
int sum[2][SIXTEEN];
void input()
{
memset(state,0,sizeof(state));
memset(sum,0,sizeof(sum));
scanf("%d %d %d", &n, &k, &s);
}
void solve()
{
int i,j,z;
for(i=1;i<=k;i++)
{
state[1][i]=1;
sum[1][i]=sum[1][i-1]+1;
}
for(i=k+1;i<=s;i++)
sum[1][i]=sum[1][i-1];
for(i=2;i<=n;i++)
{
for(j=1;j<=s;j++)
{
state[(i&1)][j]=(sum[(i&1)^1][f(j-1)]-sum[(i&1)^1][f(j-k-1)]+MOD)%MOD;
sum[(i&1)][j]=(sum[(i&1)][j-1]+state[(i&1)][j])%MOD;
}
}
printf("%d\n", state[n&1][s]);
}
int main()
{
int i,t;
scanf("%d", &t);
for(i=1;i<=t;i++)
{
input();
printf("Case %d: ", i);
solve();
}
return 0;
}
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