#include <bits/stdc++.h>
#define ll long long
#define INF 1000000005
#define MOD 1000000007
#define EPS 1e-10
#define rep(i,n) for(int i=0;i<(int)n;++i)
#define each(a, b) for(auto (a): (b))
#define all(v) (v).begin(),(v).end()
#define fi first
#define se second
#define pb push_back
#define show(x) cout <<#x<<" = "<<(x)<<endl
#define spair(p) cout <<#p<<": "<<p.fi<<" "<<p.se<<endl
#define svec(v) cout<<#v<<":";rep(kbrni,v.size())cout<<" "<<v[kbrni];cout<<endl
#define sset(s) cout<<#s<<":";each(kbrni,s)cout <<" "<<kbrni;cout<<endl

using namespace std;

typedef pair<int,int>P;

const int MAX_N = 2000001;

//どこかでmake()することを忘れずに
ll inv[MAX_N],fac[MAX_N],finv[MAX_N];

void make()
{
	fac[0] = fac[1] = 1;
	finv[0] = finv[1] = 1;
	inv[1] = 1;
	for(int i=2;i<MAX_N;i++){
		inv[i] = MOD - inv[MOD%i] * (MOD/i) % MOD;
		fac[i] = fac[i-1] * (ll) i % MOD;
		finv[i] = finv[i-1] * inv[i] % MOD;
	}
}

ll comb(int a,int b)
{
	if(a<b){
		return 0;
	}
	return fac[a] * (finv[b] * finv[a-b] % MOD) % MOD;
}

int main()
{
    int n;
    cin >> n;
    make();
    rep(i,n){
        char c[20];
        scanf("%s",c);
        int st=2;
        string s1,s2;
        while(1){
            if(!isdigit(c[st])){
                break;
            }else{
                s1.pb(c[st]);
            }
            st++;
        }
        st++;
        while(1){
            if(!isdigit(c[st])){
                break;
            }else{
                s2.pb(c[st]);
            }
            st++;
        }
        int u = stoi(s1),v = stoi(s2);
        if(c[0] == 'C'){
            cout << comb(u,v) << endl;
        }else if(c[0] == 'P'){
            if(u - v < 0){
                cout << "0\n";
            }else{
                cout << fac[u] * finv[u-v] << endl;
            }
        }else{
            if(u == 0 && v == 0){
                cout << "1\n";
            }else{
                cout << comb(u+v-1,v) << endl;
            }
        }
    }
    return 0;
}