#include <cstdio>
#include <cstring>

char s[3145729];
int ls,stat;

int main() {
    int t,i;
    scanf("%d",&t);
    while (t--) {
        scanf("%s",s);
        ls=strlen(s);
        stat=0;
        for (i=0;s[i]!='\0';i++) {
            if (stat==0) {
                if (s[i]=='w') stat++;
                else if (i>0&&s[i]=='v'&&s[i-1]=='v') stat++;
            } else if (stat==1) {
                if (s[i]=='y') stat++;
            } else if (stat==2) {
                if (s[i]=='h') stat++;
            }
        }
        if (stat==3) printf("Yes\n");
        else printf("No\n");
    }
    return 0;
}