Two Strings

Problem Statement

You are given two strings A and B. Find if there is a substring that appears in both A and B.

Input Format

Several test cases will be given to you in a single file. The first line of the input will contain a single integer T - the number of test cases.

Then there will be T descriptions of the test cases. Each description contains 2 lines. The first line contains the string A and the second line contains the string B.

Output Format

For each test case, display YES(in a newline), if there is a common substring. Otherwise display NO.

Constraints

All the strings contain only lowercase Latin letters.
1<=T<=10
1<=|A|,|B|<=105