continuous-check.cpp

#include <bits/stdc++.h>
using namespace std;

#define ll long long
#define ull unsigned long long
#define ff first
#define ss second
#define mp make_pair
#define pb push_back
const int N = 2e5 + 11;

void solve() {
	string s;
	cin >> s;
	unordered_set<int> bag;

	for (int i = 0; i < s.size(); i++) {
		if (bag.count(s[i] - '0') || s[i] - '0' == s.size() + 1) {
			cout << "NO" << endl;
			return;
		}
	}
	cout << "YES" << endl;
}

int main() {
	freopen("input.txt", "r", stdin);
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	int no_of_test_cases = 1;
	cin >> no_of_test_cases;
	while (no_of_test_cases--)solve();
	return 0;
}