#include<bits/stdc++.h>
using namespace std;
int t;
char a[10],b[10],c[10],d[10];
int main(){
	cin>>t;
	for(int i=1;i<=t;i++){
		cin>>a>>b>>c>>d;
	}
	for(int j=1;j<=t;j++){
		if(a[0]!='y'||b[0]!='y'){
			cout<<"No"<<endl;
			continue;
		}
		if(c[j]!='d,i,n,g'){
			cout<<"No"<<endl;
			continue;
		}
		if(d[j]!='z,h,e,n'){
			cout<<"No"<<endl;
			continue;
		}
		else{
			cout<<"Yes"<<endl;
		}
	}
	return 0;
}