n, m = map(int, input().split())

snows = [
    0,
] * m

for _ in range(n):
    for i, x in enumerate(input()):
        snows[i] += 1 if x == "S" else 0

for r in range(n):
    for c in range(m):
        print("S" if snows[c] >= n - r else ".", end="")
    print()