h, w = map(int, input().split())
s = [input() for _ in range(h)]
x = [0] * w
for i in range(h):
    for j in range(w):
        if s[i][j] == '#':
            x[j] += 1
x.sort(reverse=True)
ans = [["."] * w for _ in range(h)]
for i in range(h):
    for j in range(w):
        if x[j] > i:
            ans[i][j] = '#'
for i in ans:
    print("".join(i))