#include <iostream>
#include <vector>

using namespace std;

void testCase() {
    string s, t;
    cin >> s >> t;

    int n = s.size(), m = t.size();

    s = '$' + s + '$';
    t = '$' + t + '$';

    vector<vector<bool> > dp(n + 5, vector<bool>(m + 5));

    for (int i = n + 1; i > 0; --i) {
        for (int j = m + 1; j > 0; --j) {
            if (s.substr(i) == t.substr(j)) {
                dp[i][j] = true;
            }

            if (s[i] == t[j]) {
                dp[i][j] = dp[i][j] | dp[i + 1][j + 1];
            }

            if (j <= m && t[j] == t[j + 1]) {
                dp[i][j] = dp[i][j] | dp[i][j + 2];
            }

            if (j + 3 <= m + 1 && t[j] == t[j + 2] && t[j] == 'A' && t[j + 1] == t[j + 3] && t[j + 1] == 'B') {
                dp[i][j] = dp[i][j] | dp[i][j + 4];
            }

            if (j + 3 <= m + 1 && t[j] == t[j + 2] && t[j] == 'B' && t[j + 1] == t[j + 3] && t[j + 1] == 'C') {
                dp[i][j] = dp[i][j] | dp[i][j + 4];
            }

            if (i <= n && s[i] == s[i + 1]) {
                dp[i][j] = dp[i][j] | dp[i + 2][j];
            }

            if (i + 3 <= n + 1 && s[i] == s[i + 2] && s[i] == 'A' && s[i + 1] == s[i + 3] && s[i + 1] == 'B') {
                dp[i][j] = dp[i][j] | dp[i + 4][j];
            }

            if (i + 3 <= n + 1 && s[i] == s[i + 2] && s[i] == 'B' && s[i + 1] == s[i + 3] && s[i + 1] == 'C') {
                dp[i][j] = dp[i][j] | dp[i + 4][j];
            }
        }
    }

    if (dp[1][1]) {
        cout << "YES\n";
    } else {
        cout << "NO\n";
    }
}

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

    int tests;
    cin >> tests;

    for (int tc = 0; tc < tests; ++tc) {
        testCase();
    }

    return 0;
}