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

cols = []
for col in zip(*S):
    c = col.count('#')
    cols.append(c)

T = [['.']*M for _ in range(N)]
for j,c in enumerate(cols):
    for i in range(c):
        T[i][j] = '#'
    
rows = []
for row in T:
    c = row.count('#')
    rows.append(c)

for c in rows:
    print('#'*c + '.'*(M-c))