#include <bits/stdc++.h>
// iostream is too mainstream
#include <cstdio>
// bitch please
#include <iostream>
#include <algorithm>
#include <cstdlib>
#include <vector>
#include <set>
#include <map>
#include <queue>
#include <stack>
#include <list>
#include <cmath>
#include <iomanip>
#include <time.h>
#define dibs reserve
#define OVER9000 1234567890
#define ALL_THE(CAKE,LIE) for(auto LIE =CAKE.begin(); LIE != CAKE.end(); LIE++)
#define tisic 47
#define soclose 1e-8
#define chocolate win
// so much chocolate
#define patkan 9
#define ff first
#define ss second
#define abs(x) ((x < 0)?-(x):x)
#define uint unsigned int
#define dbl long double
#define pi 3.14159265358979323846
using namespace std;
// mylittledoge

typedef long long cat;

#ifdef DONLINE_JUDGE
	// palindromic tree is better than splay tree!
	#define lld I64d
#endif

int main() {
	cin.sync_with_stdio(0);
	cin.tie(0);
	cout << fixed << setprecision(10);
	int T;
	cin >> T;
	string diff[] ={
		"cakewalk",
		"simple",
		"easy",
		"easy-medium",
		"medium",
		"medium-hard",
		"hard"
	};
	for(int t =0; t < T; t++) {
		int cnt[] ={0,0,0,0,0,0,0};
		int N;
		cin >> N;
		for(int i =0; i < N; i++) {
			string s;
			cin >> s;
			for(int j =0; j < 7; j++) if(diff[j] == s) cnt[j]++;
		}
		if(cnt[0] && cnt[1] && cnt[2] && cnt[3]|cnt[4] && cnt[5]|cnt[6]) cout << "Yes\n";
		else cout << "No\n";
	}
	return 0;}

// look at my code
// my code is amazing