#!/usr/bin/python2
# -*- coding: utf-8 -*-
# †
R, C = map(int, raw_input().split())
G = [list(raw_input()) for _ in xrange(R)]
rows = []
cols = []
for r in xrange(R):
    for c in xrange(C):
        if G[r][c] == '*':
            rows.append(r)
            cols.append(c)

nr, nc = 0, 0
if all(r==0 for r in rows):
    nr, nc = 1, 0
elif all(c==0 for c in cols):
    nr, nc = 0, 1
elif rows[0] * cols[1] == rows[1] * cols[0]:
    nr, nc = 1, 0
G[nr][nc] = '*'

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