h,w=map(int,input().split())
g=[list(input()) for _ in range(h)]
p=[]
for i in range(h):
    for j in range(w):
        if g[i][j]=='*':
            p.append((i,j))
x1,y1=p[0];x2,y2=p[1]
f=True
for x in range(h):
    for y in range(w):
        X1=x1-x;Y1=y1-y
        X2=x2-x;Y2=y2-y
        if X1*Y2!=Y1*X2:
            g[x][y]='*'
            f=False
            break
    if not f:
        break
for i in g:
    print(*i,sep='')