#include<bits/stdc++.h> using namespace std; int t; string a,b; bool solve(){ for(int i=0;i<a.size();i+=b.size())for(int j=0;j<b.size();j++)if(i+j>=a.size()||a[i+j]!=b[j])return 0; return 1; } int main(){ cin>>t; while(t--)cin>>a>>b,puts(solve()?"YES":"NO"); return 0; }