bkkb2 ckkb2o dkkb ekkb2 fkkb2o
0alb2o 1alb 2alb2 3alb2o 4alb
p1lb q1lb2 r1lb2o s1lb t1lb2
esmb2 fsmb2o gsmb hsmb2 ismb2o
3inb2o 4inb 5inb2 6inb2o 7inb