#include<bits/stdc++.h> using namespace std; const int N =1e6+10; #define int long long signed main() { //freopen("J1.in","r",stdin); // freopen("J1.out","w",stdout); int t; cin>>t; while(t--) { string k,p; bool flag=false; cin>>k>>p; for(int i=0;i<k.length();i+=p.length()) { int u=i; for(int j=0;j<p.length();j++,u++) if(p[j]!=k[u]) { flag=true; break; } if(flag==true) break; } if(flag==true) cout<<"NO"<<endl; else cout<<"YES"<<endl; } return 0; }