#!/bin/python
import sys

def conatains_hackerrank(s):
    stack = list("knarrekcah")
    for c in s:
        if c == stack[len(stack) - 1]:
            stack.pop()
        if len(stack) == 0:
            return "YES"
    return "NO"
        

q = int(raw_input().strip())
for a0 in xrange(q):
    s = raw_input().strip()
    print conatains_hackerrank(s)