Write a program that for every given n prints an “octagon of size n” according to the pattern shown in the examples.
Input
Input consists in several natural numbers n ≥ 2.
Output
For every n, print an “octagon of size n” using capital exes. Do not print any space to the right of the exes. Print an empty line after each octagon.
Input
2 3 4
Output
XX XXXX XXXX XX XXX XXXXX XXXXXXX XXXXXXX XXXXXXX XXXXX XXX XXXX XXXXXX XXXXXXXX XXXXXXXXXX XXXXXXXXXX XXXXXXXXXX XXXXXXXXXX XXXXXXXX XXXXXX XXXX