N, M = map(int, input().split())
S = []
for _ in range(N):
    S.append(input())

L = [0]*M

for s in S:
    i = 0
    while i < M:
        if s[i] == "#":
            L[i] += 1
        i += 1

ans = [0]*N

for l in L:
    for i in range(l):
        ans[i] += 1
        i += 1

for line in ans:
    print("#"*line+"."*(M-line))