#include <iostream>
#include <string>
#include <vector>
using namespace std;

int main () {
    int n;
    cin >> n;
    while (n!=0) {
        vector<int> v(26,0);
        char c;
        while(cin >> c and c != '.') {
            if (c >= 65 and c <= 90) ++v[c-65];
            if (c >= 97 and c <= 122) ++v[c-97];
        }
        while(cin >> c and c != '.') {
            if (c >= 65 and c <= 90) --v[c-65];
            if (c >= 97 and c <= 122) --v[c-97];
        }
        bool anagrama = true;
        for (int i = 0; i < 26 and anagrama; ++i) {
            anagrama = (v[i] == 0);
        }
        if (anagrama) cout << "SI" << endl;
        else cout << "NO" << endl;
        --n;
    }
}