Letter Bank

A letter bank is a word whose letters can each be used one or more times, as often as you like, to spell another word. For example, IMPS is a bank of MISSISSIPPI. The longer word uses only I, M, P, S, and it uses all four of them.

Given two words α and β, write a program that decides whether α is a bank of β. The first word α has no repeated letter. Both words consist only of capital letters A to Z, with no blanks.

Your program reads from standard input. The first line contains the number of test cases $T$ ($1 \le T \le 20$). Each of the next $T$ lines holds two words separated by a single space. Each word has length at most 80.

Your program writes to standard output. Print exactly one line for each test case: YES if the first word is a bank of the second word, and NO otherwise.