h,w = map(int, raw_input().split())
l = [list(raw_input()) for _ in range(h)]
p = []
for y in range(h):
    for x in range(w):
        if l[y][x] == '*':
            p.append((x,y))
if p[0] == (0,0):
    if p[1][1] == 0:
        l[1][0] = '*'
    else:
        l[0][1] = '*'
else:
    if p[0][1] * p[1][0] == p[0][0] * p[1][1]:
        l[0][1] = '*'
    else:
        l[0][0] = '*'
for s in l:
    print "".join(s)