-er -ey -ic c-- ccc ccd cce cci cck cco ccp ccr ccs ccv cdc cdd cde cdi cdk cdo cdp cdr cds cdv cdy ce- cec ced cee cei cek ceo cep cer ces cev cey ci- cic cid cie cii cik cio cip cir cis civ ckc ckd cki cko cks cky co- coc cod coe coi cok coo cop cor cos cov coy cpc cpd cpe cpi cpk cpo cpp cpr cps cpv crc crd cre cri crk cro crp crr crs crv cry csc csd cse csi csk cso csp csr css csv csy cvc cvd cve cvi cvk cvo cvp cvr cvs cvv cyc cyd cye cyk cyo cyp cyr cys dcc dcd dce dci dck dco dcp dcr dcs dcv ddc ddd dde ddi ddk ddo ddp ddr dds ddy de- dec ded dee dei dek deo dep der des dev dey di- dic did die dii dik dio dip dir dis div diy dkc dke dki dkk dko dkp dkr dks doc dod doe doi dok doo dop dor dos dov doy dpc dpd dpe dpi dpk dpo dpp dpr dps dpv drc drd dre dri drk dro drp drr drs drv dry dsc dsd dse dsi dsk dso dsp dsr dss dsv dsy dvc dvd dve dvi dvk dvp dvr dvs dy- dyc dyd dye dyk dyo dyp dyr dys dyy ec- ecc ecd ece eci eck eco ecr ecs ecv ed- edc edd ede edi edk edo edp edr eds edy eec eed eee eek eeo eep eer ees eev eey eic eid eie eii eik eio eip eir eis eiv ekc ekd eke eki eko ekp ekr eks ekv eky eo- eoc eod eoe eoi eok eoo eop eor eos ep- epc epd epe epi epo epp epr eps erc erd ere eri erk ero erp err ers erv ery es- esc esd ese esi esk eso esp esr ess esv esy evc evd eve evi evo evp evr evs evv evy eyc eyd eye eyo eyp eyr eys i-d i-v icc icd ice ici ick ico icp icr ics icv icy idc idd ide idi idk ido idp idr ids idv idy ie- iec ied iee iei iek iep ier ies iev iey iic iid iie iii iio iip iir iis ikc ike iki ikk iko ikr iks ikv io- ioc iod ioe ioi ioo iop ior ios iov ipc ipd ipe ipi ipo ipp ipr ips ipv ipy ir- irc ird ire iri irk iro irp irr irs irv iry is- isc isd ise isi isk iso isp isr iss isv isy ivc ivd ive ivi ivo ivp ivr ivs ivv ivy iyc iye iyo iyr iys iyy kcc kcd kce kci kck kcp kcr kcs kdc kde kdk kdo kdp kdr kds kdy ke- kec ked kee kei kek keo kep ker kes kev key kic kid kie kii kik kio kip kir kis kiv kkc kke kki kkk kkp kkr kks kkv kky koc kod koe koi kok koo kop kor kos koy kpc kpd kpe kpi kpk kpo kpp kpr kps kpv krc krd kri krk kro krp krr krs krv kry ksc ksd kse ksi ksk kso ksp ksr kss ksv kvi kvk kvo kvp kvr kvs kvv kyc kyd kye kyo kyp kyr kys o-i oc- occ ocd oci ock oco ocp ocr ocs ocv odc odd ode odi odo odp odr ods odv oec oed oee oei oeo oep oer oes oey oic oid oie oii oik oio oip oir ois oiv okc okd oke oki okk oko okp okr oks oo- ooc ood ooi ook ooo oop oor oos oov op- opc opd ope opi opk opo opp opr ops opv opy or- orc ord ore ori ork oro orp orr ors orv ory os- osc osd ose osi osk oso osp osr oss osv ov- ovc ovd ove ovi ovo ovp ovs ovv oyd oye oyi oyo oys p-p pcc pcd pce pci pck pco pcp pcr pcs pcv pdc pdd pde pdi pdk pdo pdp pdr pds pdv pec ped pee pei pek peo pep per pes pev pey pic pid pie pii pik pio pip pir pis piv pkc pkd pke pki pko pkp pkr pks pky poc pod poe poi pok poo pop por pos pov poy ppc ppd ppe ppi ppk ppo ppp ppr pps ppv prc prd pre pri prk pro prp prr prs prv pry ps- psc psd pse psi psk pso psp psr pss psv psy pvc pvd pve pvi pvk pvo pvp pvr pvs pvv py- pyc pyd pye pyk pyo pyr pys rcc rcd rce rci rco rcp rcr rcs rcv rdc rdd rde rdi rdo rdp rdr rds rdv rdy re- rec red ree rei rek reo rep rer res rev rey ric rid rie rii rik rio rip rir ris riv riy rkc rke rkk rko rkp rks rkv rky roc rod roe roi rok roo rop ror ros rov roy rpc rpd rpe rpi rpk rpo rpp rpr rps rpv rrc rrd rri rrk rrp rrr rrs rsc rsd rse rsi rsk rso rsp rsr rss rsv rvc rvd rve rvi rvo rvp rvr rvs rvv rvy ry- ryc ryd rye ryk ryo ryr rys ryy scc scd sce sci sck sco scp scr scs scv sdc sdd sde sdi sdk sdo sdp sdr sds sdv sdy se- sec sed see sei sek seo sep ser ses sev sey sic sid sie sii sik sio sip sir sis siv sk- skc skd ske ski skk sko skp skr sks sky soc sod soe soi sok soo sop sor sos sov soy spc spd spe spi spk spo spp spr sps spv spy sr- src srd sre sri srk sro srp srr srs srv sry ss- ssc ssd sse ssi ssk sso ssp ssr sss ssv svc svd sve svi svk svo svp svr svs svv svy sy- syc syd sye syi syk syp syr sys v-e vcc vcd