b2p1x a2p1 91p1xk 81p1x 71p1
mbp1 lbp1xk kbp1x jbp1 ibp1xk
xko1xk wko1x vko1 uko1xk tko1x
8tn1x 7tn1 6tn1xk 5tn1x 4tn1
j3m1 i3m1xk h3m1x g3m1 f3m1xk