-er a-a a-c aaa aac aae aak aao aap aar aav ac- aca acc ace ack aco acp acr acv aea aec aee aek aeo aep aer aev aka akc ake akk ako akp akr akv aoa aoc aoe aok aoo aop aor aov ap- apa apc ape apk apo app apr apv ar- ara arc are ark aro arp arr arv av- ava avc ave avk avo avp avr c-- caa cac cae cak cao cap car cav cca ccc cce cck cco ccp ccr ccv ce- cea cec cee cek ceo cep cer cev cka ckc cko co- coa coc coe cok coo cop cor cov cpa cpc cpe cpk cpo cpp cpr cpv cra crc cre crk cro crp crr crv cva cvc cve cvk cvo cvp cvr cvv eaa eac eae eak eao eap ear eav ec- eca ecc ece eck eco ecr ecv eea eec eee eek eeo eep eer eev eka ekc eke eko ekp ekr ekv eo- eoa eoc eoe eok eoo eop eor ep- epa epc epe epo epp epr era erc ere erk ero erp err erv eva evc eve evo evp evr evv ka- kaa kac kae kak kao kap kar kav kca kcc kce kck kcp kcr ke- kea kec kee kek keo kep ker kev kkc kke kkk kkp kkr kkv koa koc koe kok koo kop kor kpa kpc kpe kpk kpo kpp kpr kpv kra krc krk kro krp krr krv kva kvk kvo kvp kvr kvv oaa oac oae oak oao oap oar oav oc- oca occ ock oco ocp ocr ocv oea oec oee oeo oep oer oka okc oke okk oko okp okr oo- ooa ooc ook ooo oop oor oov op- opa opc ope opk opo opp opr opv or- ora orc ore ork oro orp orr orv ov- ova ovc ove ovo ovp ovv p-p paa pac pae pak pao pap par pav pca pcc pce pck pco pcp pcr pcv pea pec pee pek peo pep per pev pka pkc pke pko pkp pkr poa poc poe pok poo pop por pov ppa ppc ppe ppk ppo ppp ppr ppv pra prc pre prk pro prp prr prv pva pvc pve pvk pvo pvp pvr pvv ra- raa rac rae rak rao rap rar rav rca rcc rce rco rcp rcr rcv re- rea rec ree rek reo rep rer rev rkc rke rkk rko rkp rkv roa roc roe rok roo rop ror rov rpa rpc rpe rpk rpo rpp rpr rpv rra rrc rrk rrp rrr rva rvc rve rvo rvp rvr rvv v-a v-e vaa vac vae vak vao vap var vav vca vcc vce vco vcp vcr vea vec vee vek veo vep ver vka vkp voa voc voe vok voo vop vor vov vpa vpc vpe vpk vpo vpp vpr vra vrc vre vrk vrp vrr vva vvc vvo vvr vvv

-vac a-ak a-ok aaaa aaac aaae aaap aaar aaav aaca aacc aace aack aaco aacp aacr aacv aaea aaec aaep aaev aaka aake aaoe aaoo aapa aapc aapo aara aarc aare aaro aarp aava acaa acac acae acap acar acca accc acce acco accp ace- acea acec acek acer acev acke acoa acoe acop acor acpa acpe acpr acr- acra acrc acre acro acrr acrv acvv aeac aeap aeer aeka aer- aera aerc aero aeva akaa akae akao akap akar akca akee aker akka akko akok akpo akr- akra akre aoca aoce aokp aopo aora apac apak apao apap apar apca apcc apco apcr apea apec apep aper apev apke apo- apoc apoe apoo apop apor appa appc appr apra aprc apre apro arac arae arak arap arar arc- arca arce arco area arec aree arek areo arep arev arka arke arko aroa aroe aroo aror arpa arpe arr- arra arrc arre arrk arro arrr arva arve arvo avao avar avcc avce avco avea avec aveo aver avor avra avre avro avva avvo caaa caac caap cac- caca cacc cace cack caco cacr caec caer caka cake caor capa capc cape capo capp cara carc care cark caro carp carr cava cave cavo ccaa ccac ccap ccar ccca cccc cccp cccv ccee ccoc ccpa ccpe ccpp ccpr ccra ccrc ccre ccrp ccvo ceac cear cec- ceca cece ceco cecp ceec ceke ceop ceor cepa cepc cepe cepo cepp cepr cer- cera cerc cere cero cerp ceva cevo ckac ckck ckco ckcv cker ckoa ckoc ckoo ckor ckpc ckpr ckrc ckvo coak coca coce cock coco cocp coep cok- coka coke coko cook coop copa cope copo copp copr cor- cora corc core cork coro corp corr cova cove covo cpaa cpac cpap cpca cpce cpea cpep cper cppa cpre cpvc crac crap crar crca crcc crce crcr cre- crea crec cree creo crep crkc crkp croc croe crok croo crop cror crpc cvac cvar cvca cvcc cver cvra cvrr eaca eacc eaec eaop eapc eapp eara eare earo earp eave eavp ecaa ecac ecao ecar ecca eccc ecce ecco ecka ecko eco- ecop ecpa ecpp ecra ecrc ecrr ecrv eeca eeea eeee eeka eeke eeoc eera eerc eero eeva eka- ekco ekek eker ekka ekoa ekpe ekpo eoka eora eore epaa epac epcc epec epee eper epoc epor eppa eppc eppo eppp epra epro eprp erap erca ercc erce ercp erec erer erev erke eroc eroe eroo erpa erpe erra errc erre erro erve evac evae evap evar evea ever evoe evoo evop evra evre evvk kaaa kaak kaap kaar kacc kace kaco kacp kacv kaeo kaep kaer kaka kakc kake kakk kako kaoa kaoc kaok kaor kap- kapa kapc kape kapo kapp kara kare kark karo karp karr karv kava kave kavo kavp kavv kcaa kcac kcap kcar kcav kcca kccc kcck kccr kccv kcea kcec kcee kceo kcep kckc kckk kcko kckr kckv kcoe kcor kcpa kcpc kcpo kcpr kcrc kcro kcrp kcrr kcrv kcvk kcvo kcvp kcvr kcvv kea- keak keap kear keca keck keco kecr keek keep keer keka kekc