#include<cstdio>
#include<iostream>
#include<algorithm>
#include<queue>
#include<vector>
#include<string.h>
#define eps 1e-9
#define nn 50005
#define INF 0x7FFFFFFF
#define pi 3.141592657
#define e 2.718281828459045

typedef long long LL;

using namespace std;

/*-----------------------------never more!---------------------------*/

char s[3245728];

int main()
{
    int T;
    while(scanf("%d",&T)!=EOF)
    {
        while(T--)
        {
            scanf("%s",s);
            int i,len=strlen(s);
            bool w=0,y=0,h=0;
            for(i=0;i<len;i++)
            {
                if(!w&&((s[i]=='w')||((s[i]=='v')&&(s[i+1]=='v'))))
                {
                    w=1;
                }
                if(w&&!y&&(s[i]=='y'))
                    y=1;
                if(w&&y&&s[i]=='h')
                {
                    h=1;
                    break;
                }
            }
            if(h)
                puts("Yes");
            else
                puts("No");
        }
    }
    return 0;
}