You have a list of items and two friends, Takahashi and Aoki, who each want some of those items. The task is to check if there is at least one item that both friends want.
Input: 'oxoo', 'xoox'
'oxoo', 'xoox'
Output: Yes
Yes
Input: 'xxxxx', 'ooooo'
'xxxxx', 'ooooo'
Output: No
No