H,W = map(int,input().split())
S = [list(input()) for i in range(H)]
p = []
for i in range(H):
	for j in range(W):
		if S[i][j] == '*':
			p.append((i,j))

di,dj = p[0][0] - p[1][0],p[0][1] - p[1][1]
ni,nj = p[0][0] + di,p[0][1] + dj
ny,nx = p[0][0] - di,p[0][1] - dj
ok = [[True for j in range(W)] for i in range(H)]
while ni < H and nj < W and ni >= 0 and nj >= 0:
	ok[ni][nj] = False
	ni += di
	nj += dj
while ny < H and nx < W and ny >= 0 and nx >= 0:
	ok[ny][nx] = False
	ny -= di
	nx -= dj

for i in range(H):
	flag = False
	for j in range(W):
		if ok[i][j]:
			S[i][j] = '*'
			flag = True
			break
	if flag:
		break
#print('')
#print(''.join([str(i%10) for i in range(W)]))
for i in range(H):
	print(''.join(S[i]))