思维

#include <bits/stdc++.h>

using i64 = long long;

void solve() {
	int n;
	std::cin >> n;
	std::string s;
	std::cin >> s;

	int j = 0;
	for (int i = 0; i < 4; i++) {
		char lo = "meow"[i];
		char up = "MEOW"[i];
		if (j == n || (s[j] != lo && s[j] != up)) {
			std::cout << "NO\n";
			return;
		}
		while (j < n && (s[j] == lo ||s[j] == up)) {
			j++;
		}
	}
	std::cout << (j == n ? "YES\n" : "NO\n");
}

int main() {
	std::ios::sync_with_stdio(false);
	std::cin.tie(nullptr);

	int t;
	std::cin >> t;

	while (t--) {
		solve();
	}
	
	return 0;
}