a-a a-c a-t aaa aac aae aao aap aas aat aav ac- aca acc ace aco acp acs act acv aea aec aee aeo aep aes aet aev aoa aoc aoe aoo aop aos aot aov ap- apa apc ape apo app aps apt apv as- asa asc ase aso asp ass ast asv at- ata atc ate ato atp ats att atv av- ava avc ave avo avp avs avt c-- caa cac cae cao cap cas cat cav cca ccc cce cco ccp ccs cct ccv ce- cea cec cee ceo cep ces cet cev co- coa coc coe coo cop cos cot cov cpa cpc cpe cpo cpp cps cpt cpv csa csc cse cso csp css cst csv cta ctc cte cto ctp cts ctt ctv cva cvc cve cvo cvp cvs cvt cvv eaa eac eae eao eap eas eat eav ec- eca ecc ece eco ecs ect ecv eea eec eee eeo eep ees eet eev eo- eoa eoc eoe eoo eop eos eot ep- epa epc epe epo epp eps ept es- esa esc ese eso esp ess est esv eta etc ete eto etp ets ett etv eva evc eve evo evp evs evt evv oaa oac oae oao oap oas oat oav oc- oca occ oco ocp ocs oct ocv oea oec oee oeo oep oes oet oo- ooa ooc ooo oop oos oot oov op- opa opc ope opo opp ops opt opv os- osa osc ose oso osp oss ost osv ot- ota otc ote oto otp ots ott otv ov- ova ovc ove ovo ovp ovs ovv p-p paa pac pae pao pap pas pat pav pca pcc pce pco pcp pcs pct pcv pea pec pee peo pep pes pet pev poa poc poe poo pop pos pot pov ppa ppc ppe ppo ppp pps ppt ppv ps- psa psc pse pso psp pss pst psv pt- pta ptc pte pto ptp pts ptt ptv pva pvc pve pvo pvp pvs pvt pvv saa sac sae sao sap sas sat sav sca scc sce sco scp scs sct scv se- sea sec see seo sep ses set sev soa soc soe soo sop sos sot sov spa spc spe spo spp sps spt spv ss- ssa ssc sse sso ssp sss sst ssv sta stc ste sto stp sts stt stv sva svc sve svo svp svs svt svv taa tac tae tao tap tas tat tav tca tcc tce tco tcp tcs tct tcv te- tea tec tee teo tep tes tet tev to- toa toc toe too top tos tot tov tpa tpc tpe tpo tpp tps tpt tpv tsa tsc tse tso tsp tss tst tsv tta ttc tte tto ttp tts ttt ttv tva tvc tve tvo tvp tvs tvt v-a v-e vaa vac vae vao vap vas vat vav vca vcc vce vco vcp vcs vct vea vec vee veo vep ves vet voa voc voe voo vop vos vot vov vpa vpc vpe vpo vpp vps vpt vsa vsc vse vso vsp vss vst vsv vta vtc vte vto vts vtt vtv vva vvc vvo vvs vvt vvv