h, w = map(int, input().split())

a = []
b = []
for _ in range(h):
    s = list(input())
    a.append(s)
    if '*' in s:
        b.append(s.index('*'))

if set(b) != {0}:
    a[0][0] = '*'
else:
    a[0][1] = '*'

for i in range(h):
    print(''.join(a[i]))