Given two strings, determine if they share a common substring. A substring may be as small as one character.

Example

These share the common substring $.$

These do not share a substring.

Function Description

Complete the function twoStrings in the editor below.

twoStrings has the following parameter$($s$)$:

string s$1$: a string

string s$2$: another string

Returns

string: either YES or NO

Input Format

The first line contains a single integer $,$ the number of test cases.

The following pairs of lines are as follows:

The first line contains string $.$

The second line contains string $.$

Constraints

and consist of characters in the range ascii$[$a$-$z$].$

Output Format

For each pair of strings, return YES or NO$.$