R=range
I=input
H,W=map(int,I().split())
for i in R(H):
	a,p,s="",0,I()+' ';
	for j in R(W):
		a+='Y'if'y'==s[j]and'9'==(s[j-1]if j==p+1 else s[j+1]if j==p+4 else"")else s[j]
		if s[j]=='.'or j-p==5:p=j+1
	print(a)