#587. Words starting with 'p'
You are given some words. Print the words that start with the letter `p`, in their order, separated by spaces. If there are none, print `None`.
### Input
One line.
### Output
One line.
Examples
Input
madam dragon madam scratch forest civic summer scratch castle
Output
None
Input
winter winter loop stats school garden
Output
None
💡 You can solve it with Python, JavaScript or blocks. Read the input line by line with input(). Don't print a question (like input("Number: ")). Print exactly what the output asks for, nothing more.