import math import os import random import re import sys

first_multiple_input = input().rstrip().split()

n = int(first_multiple_input[0])

m = int(first_multiple_input[1])

matrix = []

for _ in range(n): matrix_item = input() matrix.append(matrix_item)

st="" for i in range(m): for j in range(n): st += matrix[j][i] st = re.sub(r'(?<=\w)([$#%! ]+)(?=\w)'," ",st) print(st)