a-a a-c a-t aaa aac aae aak aao aap aat aav ac- aca acc ace ack aco acp act acv aea aec aee aek aeo aep aet aev aka akc ake akk ako akp akv aoa aoc aoe aok aoo aop aot aov ap- apa apc ape apk apo app apt apv at- ata atc ate ato atp att atv av- ava avc ave avk avo avp avt c-- caa cac cae cak cao cap cat cav cca ccc cce cck cco ccp cct ccv ce- cea cec cee cek ceo cep cet cev cka ckc cko ckt co- coa coc coe cok coo cop cot cov cpa cpc cpe cpk cpo cpp cpt cpv cta ctc cte ctk cto ctp ctt ctv cva cvc cve cvk cvo cvp cvt cvv eaa eac eae eak eao eap eat eav ec- eca ecc ece eck eco ect ecv eea eec eee eek eeo eep eet eev eka ekc eke eko ekp ekt ekv eo- eoa eoc eoe eok eoo eop eot ep- epa epc epe epo epp ept eta etc ete etk eto etp ett etv eva evc eve evo evp evt evv k-t ka- kaa kac kae kak kao kap kat kav kca kcc kce kck kcp kct ke- kea kec kee kek keo kep ket kev kkc kke kkk kkp kkt kkv koa koc koe kok koo kop kot kpa kpc kpe kpk kpo kpp kpt kpv kta ktc kte ktk kto ktp ktt ktv kva kvk kvo kvp kvv oaa oac oae oak oao oap oat oav oc- oca occ ock oco ocp oct ocv oea oec oee oeo oep oet oka okc oke okk oko okp oo- ooa ooc ook ooo oop oot oov op- opa opc ope opk opo opp opt opv ot- ota otc ote otk oto otp ott otv ov- ova ovc ove ovo ovp ovv p-p paa pac pae pak pao pap pat pav pca pcc pce pck pco pcp pct pcv pea pec pee pek peo pep pet pev pka pkc pke pko pkp pkt poa poc poe pok poo pop pot pov ppa ppc ppe ppk ppo ppp ppt ppv pt- pta ptc pte ptk pto ptp ptt ptv pva pvc pve pvk pvo pvp pvt pvv taa tac tae tak tao tap tat tav tca tcc tce tck tco tcp tct tcv te- tea tec tee tek teo tep tet tev tka tkc tke tkk tko tkp tkt to- toa toc toe tok too top tot tov tpa tpc tpe tpk tpo tpp tpt tpv tta ttc tte ttk tto ttp ttt ttv tva tvc tve tvk tvo tvp tvt v-a v-e vaa vac vae vak vao vap vat vav vca vcc vce vco vcp vct vea vec vee vek veo vep vet vka vkp vkt voa voc voe vok voo vop vot vov vpa vpc vpe vpk vpo vpp vpt vta vtc vte vtk vto vtt vtv vva vvc vvo vvt vvv