#!/bin/python3

import sys


q = int(input().strip())
for a0 in range(q):
    s = input().strip()
    # your code goes here
    in_string = True
    found = {'h':0, 'a':0, 'c':0, 'k':0, 'e':0, 'r':0, 'n':0}
    for i  in range(len(s)):
        if (s[i] in found):
            found[s[i]] += 1
    for key in found:
        if (key == 'k' or key == 'r'):
            if (found[key] < 2):
                in_string = False
        else:
            if (found[key] < 1):
                in_string = False

    if (in_string):
        print('YES')
    else:
        print('NO')