#include #include #include

using namespace std;

bool check(string a, string b) { if(a == "shitou") return b == "jiandao"; if(a == "jiandao") return b == "bu"; if(a == "bu") return b == "shitou"; return false; }

int main() { int T; cin >> T; while ( T -- ) { string a, x1; string b, x2; cin >> a >> x1 >> b >> x2;

    if(x1 == x2) {
        puts("yi qi chi shi.");
        continue;
    }

    if(check(x1, x2)) cout << b << " chishi." << endl;
    else cout << a << " chishi." << endl;
}
return 0;

}