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?
输入解释
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.
输出解释
For each test case, output "Yes" if CRB can convert s to t, otherwise output "No".