#include<stdio.h>
char s[3145728];
int main()
{
    int T;
    scanf("%d",&T);
    while(T--)
    {
        scanf("%s",s);
        int size=0;
        if(s[0]=='w') size++;
        for(int i=1;s[i]&&size<3;i++)
        {
            if(size==0) 
            {
                if(s[i]=='w'||s[i]=='v'&&s[i-1]=='v') size++;
            }
            else if(size==1)
            {
                if(s[i]=='y')size++;
            }
            else if(size==2)
            {
                if(s[i]=='h') size++;
            }
        }
        if(size==3) printf("Yes\n");
        else printf("No\n");
    }
}