Description

This problem requires you to calculate $A-B$. However, the tricky part is that both $A$ and $B$ are strings —— that is, you need to delete all characters from string $A$ that are contained in string $B$, and the remaining characters form the string $A-B$.

Input Format

Input consists of 2 lines, giving strings $A$ and $B$ respectively. The length of each string does not exceed $10^4$, and it is guaranteed that each string consists of digits, letters, spaces, and other characters, ending with a newline character.

Output Format

Print the result string of $A-B$ in one line.

Sample

I love GPLT It is a fun game
aeiou

I lv GPLT It s  fn gm