Save Ironman

#include<iostream>
#include<cstdio>
#include<string>
#include<cctype>

using namespace std;

int take_alphabet(string &s, int n){
    int i;
    for(i = 0; i < n; i++){
        s[i] = tolower(s[i]);
        if(s[i] >= 'a' && s[i] <= 'z'){
            continue;
        }
        else{
            s.erase(i,1);
            i--; n--;
        }
    }
    return n;
}

int main(){
    int t; cin >> t;
    cin.ignore();
    while(t--){
        string str;

        getline(cin , str);
        int n = str.length();
        n = take_alphabet(str, n);
        //cout << str << endl;
        int i = 0, j= n-1;
        int flag = 0;
        while(i < j){
            if(str[i] != str[j]){
                flag = 1;
                break;
            }
            i++; j--;
        }

        if(flag) cout << "NO\n";
        else cout << "YES\n";
    }
}