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)

try these code decoded_script = re.sub(r'(?<=\w)([^\w]+)(?=\w)', ' ', decoded_script)

print(decoded_script)