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

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

    const int C = 26;
    int Q;
    cin >> Q;

    while (Q--) {
        string S, T;
        cin >> S >> T;
        int N = (int)S.size();

        vector<int> A(C), B(C);
        for (char c : S) A[c - 'a']++;
        for (char c : T) B[c - 'a']++;
        cout << (A == B ? "Yes" : "No") << '\n';
    }
    return 0;
}