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Pattern Matching

1. You are given a string and a pattern. 2. You've to check if the string is of the same structure as pattern without using any regular expressions. Note -> Check out the question video and write the recursive code as it is intended without changing signature. The judge can't force you but intends you to teach a concept.

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Pattern Matching

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1. You are given a string and a pattern. 2. You've to check if the string is of the same structure as pattern without using any regular expressions. Note -> Check out the question video and write the recursive code as it is intended without changing signature. The judge can't force you but intends you to teach a concept.

Constraints

1 <= length of str,ptr <= 20

Format

Input

A String str A pattern ptr

Output

Check the sample ouput and question video.

Example

Sample Input

graphtreesgraph pep

Sample Output

p -> graph, e -> trees, .

Question Video

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