Is All Same Word Twice

Check if all strings: same word repeated twice with hyphen. Example: ["fast-fast","go-go"] => True. Empty word invalid.

Your task

Implement this function:

def is_all_same_word_twice(strings: list) -> bool:

Write the function only — the arguments are read for you and the return value is printed automatically.

Arguments arrive as one Python literal per line, in this order: strings.

Example

Input

['fast-fast', 'go-go']

Output

True