#include<iostream>

#include<string>

using namespace std;

​

class solution

{

public:

    void solve()

    {

        int cnt = 0;

        string s1, s2;

        cin >> s1 >> s2;

        int n1 = s1.length();

        for (int i = 0; i < n1; i++)

        {

            if (s1[i] == s2[i])

                cnt++;

            else if ((s1[i] == '?' && s2[i] != '?') || (s1[i] != '?' && s2[i] == '?')|| (s1[i] == '?' && s2[i] == '?'))

                cnt++;

        }

        if (cnt == n1)

            cout << "Yes\n";

        else

            cout << "No\n";

    }

};

int main()

{

    solution ss;

​

    int t;

    cin >> t;

    while (t--)

    {

        ss.solve();

    }

​

    return 0;

}