B

#include <bits/stdc++.h>

using namespace std;

#define ll     long long
#define _test   int _TEST; cin>>_TEST; while(_TEST--)
#define pb     push_back

int main()
{
    _test
    {
        string a, b;
        cin>>a>>b;

        int f = 0;

        for(int i=0; i<a.size()-1; i++)
            f |= (a[i]==b[i] && a[i]=='0' &&
                  a[i+1]==b[i+1] && a[i+1]=='1');

        if(f)       cout<<"YES\n";
        else        cout<<"NO\n";
    }
}