Problem: Given a String(only lower case letters) , check if any substring has occured Twice :

 Example : iwsagoodboody
Here, substring  "ood" occurs twice.

Output "YES"  if there is any such substring else output "NO" .(without qoutes)

Input:

First line of input consists of an integer T (1 ≤ T ≤ 100) ,  indicating the number of test cases. 
For each test case, there will be a string s (1 ≤ |s| ≤ 2000)

Output:
    Print "YES"  if there is any such substring else Print "NO" .(without quotes)

SAMPLE INPUT
3
abcdefghi
dogsbarkatdogs
howtheydo

SAMPLE OUTPUT
NO
YES
YES

Solution (in PYTHON):

Solution:
for t in xrange(input()):
	s = raw_input()
	ok = False
	for i in xrange(len(s)):
		for j in xrange(i,len(s)):
			ss = s[i:j]
			if len(ss)<1:
				continue
			if s.count(ss)>=2:
				#print ss
				ok = True
				break
		if ok:
			break
	if ok:
		print "YES"
	else:
		print "NO"