aza2 bza2r cza2re dza2 eza2r

zpb2r 0pb2re 1pb2 2pb2r 3pb2re

ogc2re pgc2 qgc2r rgc2re sgc2

d7c2 e7c2r f7c2re g7c2 h7c2r

2xd2r 3xd2re 4xd2 5xd2r 6xd2re