h,w=map(int,input().split())
s=[list(input()) for i in range(h)]
for i in range(h):
	for j in range(w-5+1):
		if s[i][j:j+5]=="yiwiy":
			if j-1>=0 and s[i][j-1]=="9":
				s[i]="Y"
			else:
				s[i+5]="Y"
	print("".join(s[i]))