-ol b-p bbb bbc bbh bbk bbl bbo bbp bcb bcc bch bck bcl bco bcp bhb bhc bhh bhk bhl bho bhp bkb bkc bkk bkl bko bkp blb blc blh blk bll blo blp bob boc boh bok bol boo bop bpb bpc bph bpl bpo bpp c-- cbb cbc cbh cbk cbl cbo cbp ccb ccc cch cck ccl cco ccp ch- chb chc chh chk chl cho chp ckb ckc ckh cko cl- clb clc clh clk cll clo clp co- cob coc coh cok col coo cop cpb cpc cph cpk cpl cpo cpp hbb hbc hbh hbk hbl hbo hbp hcb hcc hch hck hcl hco hcp hhb hhc hhh hhk hhl hho hhp hkb hkh hkk hkl hko hkp hlb hlc hlh hll hlo hlp hob hoc hoh hok hol hoo hop hpb hpc hph hpk hpl hpo hpp kbb kbc kbh kbk kbl kbo kbp kcb kcc kch kck kcl kcp khh khk kho kkb kkc kkh kkk kkl kkp kl- klb klc klh klo kob koc koh kok kol koo kop kpc kph kpk kpl kpo kpp l-p lbb lbc lbh lbk lbl lbo lbp lcb lcc lch lck lcl lco lcp lhb lhc lhh lhk lho lhp lkb lkh lkl lkp llb llc llk lll llo llp lob loc loh lok lol loo lop lpb lpc lph lpk lpl lpo lpp ob- obb obc obh obk obl obo obp oc- ocb occ och ock ocl oco ocp ohc ohh ohl oho ohp okb okc okk okl oko okp olb olc olk oll olo olp oo- oob ooc ooh ook ool ooo oop op- opb opc oph opk opl opo opp p-p pbb pbc pbk pbl pbo pbp pcb pcc pch pck pcl pco pcp phb phc phk phl pho php pkb pkc pkl pko pkp plb plc plh plk pll plo plp pob poc poh pok pol poo pop ppb ppc pph ppk ppl ppo ppp