-ey c-- ccc ccd cce cck cco ccp ccs cdc cdd cde cdk cdo cdp cds cdy ce- cec ced cee cek ceo cep ces cey ckc ckd cko cks cky co- coc cod coe cok coo cop cos coy cpc cpd cpe cpk cpo cpp cps csc csd cse csk cso csp css csy cyc cyd cye cyk cyo cyp cys dcc dcd dce dck dco dcp dcs ddc ddd dde ddk ddo ddp dds ddy de- dec ded dee dek deo dep des dey dkc dke dkk dko dkp dks doc dod doe dok doo dop dos doy dpc dpd dpe dpk dpo dpp dps dsc dsd dse dsk dso dsp dss dsy dy- dyc dyd dye dyk dyo dyp dys dyy ec- ecc ecd ece eck eco ecs ed- edc edd ede edk edo edp eds edy eec eed eee eek eeo eep ees eey ekc ekd eke eko ekp eks eky eo- eoc eod eoe eok eoo eop eos ep- epc epd epe epo epp eps es- esc esd ese esk eso esp ess esy eyc eyd eye eyo eyp eys kcc kcd kce kck kcp kcs kdc kde kdk kdo kdp kds kdy ke- kec ked kee kek keo kep kes key kkc kke kkk kkp kks kky koc kod koe kok koo kop kos koy kpc kpd kpe kpk kpo kpp kps ksc ksd kse ksk kso ksp kss kyc kyd kye kyo kyp kys oc- occ ocd ock oco ocp ocs odc odd ode odo odp ods oec oed oee oeo oep oes oey okc okd oke okk oko okp oks oo- ooc ood ook ooo oop oos op- opc opd ope opk opo opp ops opy os- osc osd ose osk oso osp oss oyd oye oyo oys p-p pcc pcd pce pck pco pcp pcs pdc pdd pde pdk pdo pdp pds pec ped pee pek peo pep pes pey pkc pkd pke pko pkp pks pky poc pod poe pok poo pop pos poy ppc ppd ppe ppk ppo ppp pps ps- psc psd pse psk pso psp pss psy py- pyc pyd pye pyk pyo pys scc scd sce sck sco scp scs sdc sdd sde sdk sdo sdp sds sdy se- sec sed see sek seo sep ses sey sk- skc skd ske skk sko skp sks sky soc sod soe sok soo sop sos soy spc spd spe spk spo spp sps spy ss- ssc ssd sse ssk sso ssp sss sy- syc syd sye syk syp sys ycc ycd yce yco ycp ycs ycy yde ydo yds ydy yec yed yee yek yeo yep yes yey ykk yoc yod yoe yok yoo yop yos yoy ypd ypo yps ysc yse ysk yso ysp yss ysy yyc yye yys yyy