2,8,4,0,0,2,8,5,
4,z,7,0,0,3,0,4,
4,0,0,0,0,0,0,4,
4,0,0,0,0,0,z,4,
4,z,0,0,z,0,0,4,
4,0,0,0,0,0,0,4,
4,0,z,0,0,0,0,4,
7,8,1,8,8,1,8,3