H,W = map(int,input().split())
S = [list(input()) for _ in range(H)]
xi,yi = H+1,W+1
for i in range(H):
    for j in range(W):
        if S[i][j]=='*':
            xi,yi=i,j
            break
    if xi!=H+1:
        break

xj,yj = -1,-1
for i in range(H-1,-1,-1):
    for j in range(W-1,-1,-1):
        if S[i][j]=='*':
            xj,yj=i,j
            break
    if xj!=-1:
        break
for i in range(H):
    for j in range(W):
        dxi,dyi = xi-i,yi-j
        dxj,dyj = xj-i,yj-j
        if (dxi*dxj+dyi*dyj)**2!=(dxi**2+dyi**2)*(dxj**2+dyj**2):
            S[i][j]='*'

            for i in range(H):
                print(*S[i])
            exit()