a,b='*-';f=1
H,W=input().split()
S=[input()for x in a*int(H)]
for i in S:
 c=i.count(a)
 if[c>0,c<1][sum(x.count(a)>1for x in S)]and f:
  print(i.replace(b,a,1));f=0
 else:print(i)