import sys
read = sys.stdin.buffer.read
readline = sys.stdin.buffer.readline
readlines = sys.stdin.buffer.readlines

import numpy as np
import random

H,W = map(int,readline().split())
S = np.frombuffer(read(),'S1').reshape(H,-1)[:,:W].astype(str)

X,Y = np.where(S == '*')

def test(x,y):
    x0,x1 = X-x
    y0,y1 = Y-y
    return x0 * y1 != y0 * x1

while True:
    x = random.randint(0,H-1)
    y = random.randint(0,H-1)
    if test(x,y):
        break

S[x][y] = '*'

print('\n'.join(''.join(row) for row in S))