#include<iostream>
#include<vector>
using namespace std;
int t;
int main(){
    cin >> t;
    while (t--){
        string s1, s2;
        cin >> s1;
        cin >> s2;
        vector <vector <char> > ss1 (max(s1.length(), s2.length())); vector <vector <char> > ss2 (max(s1.length(), s2.length()));
        int j = 0; ss1[j].push_back(s1[0]);
        for (int i = 1; i < s1.length(); ++i){
            if (ss1[j][0] == s1[i]) ss1[j].push_back(s1[i]);
            else{
                j++;
                ss1[j].push_back(s1[i]);

            }
        }
        int k = 0; ss2[k].push_back(s2[0]);
        for (int i = 1; i < s2.length(); ++i){
            if (ss2[k][0] == s2[i]) ss2[k].push_back(s2[i]);
            else{
                k++;
                ss2[k].push_back(s2[i]);

            }
        }
            bool ok = true;
            if (j == k){
                for (int i = 0; i < j + 1; ++i)
                    if (ss1[i][0] != ss2[i][0] || ss1[i].size() > ss2[i].size()) ok = false;

            }
            if (j == k && ok) cout << "YES" << endl;
            else cout << "NO" << endl;
        }
    }