H,W=gets.split.map &:to_i
M=$<.to_a
a=[]
H.times{|h|W.times{|w|M[h][w]==?*&&a<<[h,w]}}
h,w=[[0,0],[1,0],[0,W-1]].find{|e|a.transpose.zip(e).none?{|x,y|x.count(y)>1}}
M[h][w]=?*
puts M