CRB and String

CRB has two strings s and t.
In each step, CRB can select arbitrary character c of s and insert any character d (d ≠ c) just after it.
CRB wants to convert s to t. But is it possible?

There are multiple test cases. The first line of input contains an integer T, indicating the number of test cases. For each test case there are two strings s and t, one per line.
1 ≤ T ≤ 10^5
1 ≤ |s| ≤ |t| ≤ 10^5
All strings consist only of lowercase English letters.
The size of each input file will be less than 5MB.

For each test case, output "Yes" if CRB can convert s to t, otherwise output "No".