Practice Strings and Pattern recognition with the exercise "Find the replacement"

Learning Opportunities

This puzzle can be solved using the following concepts. Practice using these concepts and improve your skills.

Strings
Pattern recognition

Statement

Goal

In a lot of clash of code problems, you need to replace text from one form to the other. To figure it out quickly, you have decided to write a program to look at two lines and extract the replacement sequences (if any) that will convert Line X into Line Y. Hurry!

Input

Line 1: Text X.
Line 2: Text Y, with the same length as text X.

Output

If not possible: One line: CAN'T
If X and Y are equal: One line: NONE
Otherwise, each line (in the order they appear in X): FROM -> TO

Constraints

0 < Length of X, Y < 100

Example

Input

BARTENDER
CARBENDER

Output

B->C
T->B

Solve it

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