#include<bits/stdc++.h>
typedef long long ll;
using namespace std;
const ll MOD = 1e9+7;
const ll MAX= 1000001;
ll fac[MAX], finv[MAX], inv[MAX];
void COMinit() {
	fac[0] = fac[1] = 1;
	finv[0] = finv[1] = 1;
	inv[1] = 1;
	for (ll i = 2; i < MAX; i++) {
		fac[i] = fac[i - 1] * i%MOD;
		inv[i] = MOD - inv[MOD%i] * (MOD / i) % MOD;
		finv[i] = finv[i - 1] * inv[i] % MOD;
	}
}
 
//二項計数計算
ll COM(ll n, ll k) {
	if (n < k) return 0;
	if (n < 0 || k < 0)return 0;
	return fac[n] * (finv[k] * finv[n - k] % MOD) % MOD;
}
ll permutation(ll n,ll k){
	if (n < k) return 0;
	if (n < 0 || k < 0)return 0;
	return fac[n] * (finv[n-k]%MOD) % MOD;
}
ll H(ll n, ll k){
	if(n==0&&k==0)return 1;
	return COM(n+k-1,k);
}
int main(){
	cin.tie(0);
	ios::sync_with_stdio(false);
	int n;
	char a,b,c,d;
	int x,y;
	cin>>n;
	COMinit();
	while(cin>>n){
		cin>>a>>b>>x>>c>>y>>d;
		if(a=='C'){
			cout<<COM(x,y)<<endl;
		}
		else if(a=='H'){
			cout<<H(x,y)<<endl;
		}
		else{
			cout<<permutation(x,y)<<endl;
		}
	}
}