H,W=map(int,input().split())
grid=[["#"]+list(input())+["#"] for _ in range(H)]
#print(grid)
for i in range(H):
	for j in range(1,W+1):
		if grid[i][j]=="y" and (grid[i][j-1]=="9" or grid[i][j+1]=="9"):
			grid[i][j]="Y"

for g in grid:
	print("".join(g[1:W+1]))