import itertools


def main():
    h, w = map(int, input().split())
    g = [list(input()) for _ in range(h)]
    stars = []
    for i in range(h):
        for j in range(w):
            if g[i][j] == '*':
                stars.append((i, j))

    x0, y0 = stars[0]
    x1, y1 = stars[1]
    for x, y in itertools.product(list(range(h)), list(range(w))):
        if (x0 - x) * (y1 - y) != (y0 - y) * (x1 - x):
            g[x][y] = '*'
            break

    for row in g:
        print(*row, sep='')


if __name__ == "__main__":
    main()