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:
# author s2c2

a = input()
for i in xrange(a) :
	c = raw_input()
	d = [0 for i in xrange(26)]
	for j in xrange(len(c)) :
		k = ord(c[j:j+1])-97;
		d[k] = d[k] + 1;
		
	doesExist = False;
	for i in d :
		if(i>1) :
			doesExist = True;
	if(doesExist) :
		print "YES"
	else :
		print "NO"