#include<cstdio>
#include<cstdlib>
#include<cstring>
#include<iostream>
#include<algorithm>
using namespace std;
typedef long long LL;
const int maxn = 4000006;
int n;
char s[maxn];
int main(){
    int t;
    cin>>t;
    while(t--){
        int cnt=0;
        scanf("%s",s);
        n=strlen(s);
        for(int i=0;i<n;i++) {
            if((s[i]=='w'||i&&s[i]=='v'&&s[i-1]=='v')&&cnt==0) cnt++;
            if(s[i]=='y'&&cnt==1) cnt++;
            if(s[i]=='h'&&cnt==2) cnt++;
        }
        if(cnt==3) cout<<"Yes"<<endl;
        else cout<<"No"<<endl;
    }
    return 0;
}