-ol bbb bbc bbh bbl bbn bbo bcb bcc bch bcl bcn bco bhb bhc bhh bhl bho blb blc blh bll bln blo bnb bnc bnl bnn bno bob boc boh bol bon boo c-- cbb cbc cbh cbl cbn cbo ccb ccc cch ccl ccn cco ch- chb chc chh chl chn cho cl- clb clc clh cll cln clo cn- cnb cnc cnh cnl cnn cno co- cob coc coh col con coo hbb hbc hbh hbl hbn hbo hcb hcc hch hcl hcn hco hhb hhc hhh hhl hhn hho hlb hlc hlh hll hln hlo hnb hnc hnh hnl hnn hno hob hoc hoh hol hon hoo lbb lbc lbh lbl lbo lcb lcc lch lcl lcn lco lhb lhc lhh lho llb llc lll lln llo lnb lnc lnh lnl lnn lno lob loc loh lol lon loo nbb nbc nbl nbn nbo ncb ncc nch ncl ncn nco nhb nhc nhh nhl nhn nlb nlc nlh nll nln nlo nnb nnc nnh nnl nnn nno no- nob noc noh nol non noo ob- obb obc obh obl obn obo oc- ocb occ och ocl ocn oco ohc ohh ohl ohn oho olb olc oll oln olo on- onb onc onh onl onn ono oo- oob ooc ooh ool oon ooo