#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<vector<int>> A(2, vector<int>(C));
        vector<vector<int>> B(2, vector<int>(C));
        for (int i = 0; i < N; i++) {
            A[i % 2][S[i] - 'a']++;
            B[i % 2][T[i] - 'a']++;
        }
        if (A != B) {
            cout << "No\n";
            continue;
        }
        int x = 0, y = 0;
        for (int i = 0; i < N; i++) {
            for (int j = i + 2; j < N; j += 2) {
                x ^= (S[i] > S[j]);
                y ^= (T[i] > T[j]);
            }
        }
        bool dup = false;
        for (int p = 0; p < 2; p++) {
            for (int c = 0; c < C; c++) {
                if (A[p][c] >= 2) dup = true;
            }
        }
        cout << ((dup || x == y) ? "Yes" : "No") << '\n';
    }
    return 0;
}