a1xb b1xb2 c1xb2r d1xb e1xb2

zryb2 0ryb2r 1ryb 2ryb2 3ryb2r

oizb2r pizb qizb2 rizb2r sizb

d9zb e9zb2 f9zb2r g9zb h9zb2

2z0b2 3z0b2r 4z0b 5z0b2 6z0b2r