h, w = list(map(int, input().split()))
A = [0] * w
for y in range(h):
    S = input()
    for x in range(w):
        if S[x] == "#":
            A[x] += 1

for y in range(h):
    print("#"*sum([1 for i in range(w) if A[i] > y]) + "."*(w-sum([1 for i in range(w) if A[i] > y])))