#!/bin/python
def substring(s):
    sub = {'h':1, 'a':2, 'c':1, 'k':2, 'e':1, 'r':2, 'n':1}
    
    for i in s:
        if i in sub:
            if(sub[i] != 0):
                sub[i] -= 1
                
    count = 0            
                
    for key in sub:
        if sub[key] == 0:
            count +=1
    
    if count == 7:
        print 'YES'
    else:
        print 'NO'
            

import sys


q = int(raw_input().strip())
for a0 in xrange(q):
    s = raw_input().strip()
    # your code goes here
    substring(s)