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

count = [sum(S[j][i] == "#" for j in range(N)) for i in range(M)]
ans = [["." for _ in range(M)] for _ in range(N)]
for j in range(M):
    for i in range(count[j]):
        ans[i][j] = "#"

for i in ans:
    a = i.count("#")
    print("#" * a + "." * (M-a))