import sys
input=lambda: sys.stdin.readline().rstrip()
h,w=map(int,input().split())
S=[input() for _ in range(h)]
St=[]
for i in range(h):
  for j in range(w):
    if S[i][j]=="*":
      St.append((i,j))
h1,w1=St[0]
h2,w2=St[1]
Ans=[]
for i in range(h):
  for j in range(w):
    if (i,j)!=(h1,w1) and (i,j)!=(h2,w2) and (i-h1)*(w2-w1)!=(j-w1)*(h2-h1):
      Ans.append((i,j))
      break
    else:
      continue
    break
  else:
    continue
  break
h0,w0=Ans[0]
S[h0]=S[h0][:w0]+"*"+S[h0][w0+1:]
for s in S:
  print(s)