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 tc in xrange(input()):
    x=raw_input()
    danger=False
    for i in xrange(len(x)):
        for j in xrange(i+1,len(x)+1):
            if(x.count(x[i:j])>=2):
                danger=True
                break
        if(danger):
            break
    if(danger):
        print "YES"
    else:
        print "NO"