-ol c-- ccc ccd cce cck ccl cco ccp ccs cdc cdd cde cdk cdl cdo cdp cds ce- cec ced cee cek cel ceo cep ces ckc ckd cko cks cl- clc cld cle clk cll clo clp cls co- coc cod coe cok col coo cop cos cpc cpd cpe cpk cpl cpo cpp cps csc csd cse csk csl cso csp css dcc dcd dce dck dcl dco dcp dcs ddc ddd dde ddk ddl ddo ddp dds de- dec ded dee dek del deo dep des dkc dke dkk dkl dko dkp dks dl- dlc dld dle dlk dll dlo dlp dls doc dod doe dok dol doo dop dos dpc dpd dpe dpk dpl dpo dpp dps dsc dsd dse dsk dsl dso dsp dss ec- ecc ecd ece eck ecl eco ecs ed- edc edd ede edk edl edo edp eds eec eed eee eek eel eeo eep ees ekc ekd eke ekl eko ekp eks elc eld ele elk ell elo elp els eo- eoc eod eoe eok eol eoo eop eos ep- epc epd epe epl epo epp eps es- esc esd ese esk esl eso esp ess kcc kcd kce kck kcl kcp kcs kdc kde kdk kdl kdo kdp kds ke- kec ked kee kek kel keo kep kes kkc kke kkk kkl kkp kks kl- klc kld klo kls koc kod koe kok kol koo kop kos kpc kpd kpe kpk kpl kpo kpp kps ksc ksd kse ksk ksl kso ksp kss l-p lcc lcd lce lck lcl lco lcp lcs ldc ldd lde ldk ldl ldo ldp lds lec led lee lek lel leo lep les lkl lkp lks llc lld lle llk lll llo llp lls loc lod loe lok lol loo lop los lpc lpd lpe lpk lpl lpo lpp lps lsc lsd lse lsk lsl lso lsp lss oc- occ ocd ock ocl oco ocp ocs odc odd ode odl odo odp ods oec oed oee oel oeo oep oes okc okd oke okk okl oko okp oks olc old ole olk oll olo olp ols oo- ooc ood ook ool ooo oop oos op- opc opd ope opk opl opo opp ops os- osc osd ose osk osl oso osp oss p-p pcc pcd pce pck pcl pco pcp pcs pdc pdd pde pdk pdl pdo pdp pds pec ped pee pek pel peo pep pes pkc pkd pke pkl pko pkp pks plc pld ple plk pll plo plp pls poc pod poe pok pol poo pop pos ppc ppd ppe ppk ppl ppo ppp pps ps- psc psd pse psk psl pso psp pss scc scd sce sck scl sco scp scs sdc sdd sde sdk sdl sdo sdp sds se- sec sed see sek sel seo sep ses sk- skc skd ske skk skl sko skp sks slc sld sle slk sll slo slp sls soc sod soe sok sol soo sop sos spc spd spe spk spl spo spp sps ss- ssc ssd sse ssk ssl sso ssp sss