ad1y bd1yl cd1ylb dd1y ed1yl
z31yl 031ylb 131y 231yl 331ylb
ou2ylb pu2y qu2yl ru2ylb su2y
dl3y el3yl fl3ylb gl3y hl3yl
2b4yl 3b4ylb 4b4y 5b4yl 6b4ylb