-ol c-- ccc ccf cch cck ccl cco ccs cfc cff cfh cfk cfl cfo cfs ch- chc chf chh chk chl cho chs ckc ckh cko cks cl- clc clf clh clk cll clo cls co- coc cof coh cok col coo cos csc csf csh csk csl cso css fcc fcf fck fcl fco fcs ffc fff ffh ffk ffl ffo ffs fhc fhf fhh fhl fho fhs fkc fkf fkk fkl flc flf fll flo fls foc fof foh fok fol foo fos fsc fsf fsh fsk fsl fso fss hcc hcf hch hck hcl hco hcs hfc hff hfh hfk hfl hfo hfs hhc hhf hhh hhk hhl hho hhs hkf hkh hkk hkl hko hks hlc hlf hlh hll hlo hls hoc hof hoh hok hol hoo hos hsc hsf hsh hsk hsl hss kcc kch kck kcl kcs kfc kff kfh kfo kfs khf khh khk kho khs kkc kkh kkk kkl kks kl- klc klf klh klo kls koc kof koh kok kol koo kos ksc ksf ksh ksk ksl kso kss lcc lcf lch lck lcl lco lcs lfc lff lfh lfk lfl lfo lfs lhc lhf lhh lhk lho lhs lkh lkl lks llc llf llk lll llo lls loc lof loh lok lol loo los lsc lsf lsh lsk lsl lso lss oc- occ ocf och ock ocl oco ocs of- ofc off ofl ofo ofs ohc ohf ohh ohl oho ohs okc okk okl oko oks olc olf olk oll olo ols oo- ooc oof ooh ook ool ooo oos os- osc osf osh osk osl oso oss scc scf sch sck scl sco scs sfc sff sfh sfk sfl sfo sfs sh- shc shf shh shk shl sho shs sk- skc skf skh skk skl sko sks slc slf slh slk sll slo sls soc sof soh sok sol soo sos ss- ssc ssf ssh ssk ssl sso sss