9h2r1b ai2r bi2r1 ci2r1b di2r
y82r z82r1 082r1b 182r 282r1
nz3r1 oz3r1b pz3r qz3r1 rz3r1b
cq4r1b dq4r eq4r1 fq4r1b gq4r
1g5r 2g5r1 3g5r1b 4g5r 5g5r1