-er -ey c-- ccc ccd cce cck ccn cco ccp ccr ccs cdc cdd cde cdk cdn cdo cdp cdr cds cdy ce- cec ced cee cek cen ceo cep cer ces cey ckc ckd cko cks cky cn- cnc cnd cne cnn cno cnp cnr cns cny co- coc cod coe cok con coo cop cor cos coy cpc cpd cpe cpk cpn cpo cpp cpr cps crc crd cre crk crn cro crp crr crs cry csc csd cse csk csn cso csp csr css csy cyc cyd cye cyk cyn cyo cyp cyr cys dcc dcd dce dck dcn dco dcp dcr dcs ddc ddd dde ddk ddn ddo ddp ddr dds ddy de- dec ded dee dek den deo dep der des dey dkc dke dkk dko dkp dkr dks dnc dnd dne dnk dnn dno dnp dnr dns dny doc dod doe dok don doo dop dor dos doy dpc dpd dpe dpk dpn dpo dpp dpr dps drc drd dre drk drn dro drp drr drs dry dsc dsd dse dsk dsn dso dsp dsr dss dsy dy- dyc dyd dye dyk dyn dyo dyp dyr dys dyy ec- ecc ecd ece eck ecn eco ecr ecs ed- edc edd ede edk edn edo edp edr eds edy eec eed eee eek een eeo eep eer ees eey ekc ekd eke eko ekp ekr eks eky en- enc end ene enk enn eno enp enr ens eny eo- eoc eod eoe eok eon eoo eop eor eos ep- epc epd epe epn epo epp epr eps erc erd ere erk ern ero erp err ers ery es- esc esd ese esk esn eso esp esr ess esy eyc eyd eye eyn eyo eyp eyr eys kcc kcd kce kck kcn kcp kcr kcs kdc kde kdk kdo kdp kdr kds kdy ke- kec ked kee kek ken keo kep ker kes key kkc kke kkk kkn kkp kkr kks kky kn- knc knd kne knk knn kno knp knr koc kod koe kok kon koo kop kor kos koy kpc kpd kpe kpk kpn kpo kpp kpr kps krc krd krk krn kro krp krr krs kry ksc ksd kse ksk ksn kso ksp ksr kss kyc kyd kye kyn kyo kyp kyr kys ncc ncd nce nck ncn nco ncp ncr ncs ndc ndd nde ndk ndn ndo ndp ndr nds ndy ne- nec ned nee nek nen neo nep ner nes ney nkc nke nkk nkn nko nkp nkr nks nky nnc nne nnk nnn nno nnp nns no- noc nod noe nok non noo nop nor nos noy npc npd npe npn npo npp npr nps nrc nrd nre nrk nrn nro nrp nrr nrs nry nsc nsd nse nsk nsn nso nsp nsr nss nsy nyc nyd nye nyk nyn nyo nyp nys nyy oc- occ ocd ock ocn oco ocp ocr ocs odc odd ode odn odo odp odr ods oec oed oee oen oeo oep oer oes oey okc okd oke okk oko okp okr oks on- onc ond one onk onn ono onp onr ons ony oo- ooc ood ook oon ooo oop oor oos op- opc opd ope opk opn opo opp opr ops opy or- orc ord ore ork orn oro orp orr ors ory os- osc osd ose osk osn oso osp osr oss oyd oye oyo oys p-p pcc pcd pce pck pcn pco pcp pcr pcs pdc pdd pde pdk pdn pdo pdp pdr pds pec ped pee pek pen peo pep per pes pey pkc pkd pke pkn pko pkp pkr pks pky pn- pnc pnd pne pnk pnn pno pnp pnr pns pny poc pod poe pok pon poo pop por pos poy ppc ppd ppe ppk ppn ppo ppp ppr pps prc prd pre prk prn pro prp prr prs pry ps- psc psd pse psk psn pso psp psr pss psy py- pyc pyd pye pyk pyn pyo pyr pys rcc rcd rce rcn rco rcp rcr rcs rdc rdd rde rdn rdo rdp rdr rds rdy re- rec red ree rek ren reo rep rer res rey rkc rke rkk rko rkp rks rky rnc rnd rnn rno rnp rnr rns rny roc rod roe rok ron roo rop ror ros roy rpc rpd rpe rpk rpn rpo rpp rpr rps rrc rrd rrk rrn rrp rrr rrs rsc rsd rse rsk rsn rso rsp rsr rss ry- ryc ryd rye ryk ryn ryo ryr rys ryy scc scd sce sck scn sco scp scr scs sdc sdd sde sdk sdn sdo sdp sdr sds sdy se- sec sed see sek sen seo sep ser ses sey sk- skc skd ske skk sko skp skr sks sky snc snd sne snk snn sno snp snr sns sny soc sod soe sok son soo sop sor sos soy spc spd spe spk spn spo spp spr sps spy sr- src srd sre srk srn sro srp srr srs sry ss- ssc ssd sse ssk ssn sso ssp ssr sss sy- syc syd sye syk syn syp syr sys ycc ycd yce yco ycp ycs ycy yde ydn ydo yds ydy yec yed yee yek yen yeo yep yer yes yey ykk ykn ynd yne ynk ynn ynp yns yny yoc yod yoe yok yon yoo yop yor yos yoy ypd ypo yps yrc yre yrn yro yrp yrs ysc yse ysk yso ysp ysr yss ysy yyc yye yys yyy