Easy octagons P87198

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 $n \ge 2$.

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.