MOD = 10 ** 9 + 7


def main():
    fact = [1]

    for i in range(1, 2 * 10 ** 6 + 1):
        fact.append(fact[-1] * i % MOD)

    inv = []
    for f in fact:
        inv.append(pow(f, MOD - 2, MOD))

    t = int(input())
    for _ in range(t):
        s = input()

        n, k = list(map(int, s[2:-1].split(",")))

        if s[0] == "C":
            if k > n:
                ans = 0
            else:
                ans = fact[n] * inv[k] % MOD * inv[n - k] % MOD
        elif s[0] == "P":
            if k > n:
                ans = 0
            else:
                ans = fact[n] * inv[n - k] % MOD
        elif s[0] == "H":
            if n == 0:
                if k == 0:
                    # ????
                    ans = 1
                else:
                    ans = 0
            else:
                # C(n + k - 1, k)
                ans = fact[n + k - 1] * inv[k] % MOD * inv[n - 1] % MOD
        print(ans)


main()