-vac aaaa aaac aaas aaav aaca aacc aaco aacs aact aacv aaoo aasa aasc aass aast aata aatc aatt aava ac-t acaa acac acas acat acca accc acco accs acct acoa acos acot acsa acsc acss acst acta actc acto acts actt actv acvs acvv aoca aocs aoss aotc asaa asac asao asas asat asc- asca ascc asco asct asoc asos asot assa assc asso asss asst asta astc asto asts astv asva asvs at-t ataa atac atas atat atca atcc atco atcs atoc atos atot atsc atst atta atto atts atvs avao avas avat avcc avco avos avot avst avva avvo caaa caac caas caat cac- caca cacc caco caos casa casc caso cass cast cat- cata catc cato cats catt catv cava cavo cavs ccaa ccac ccas ccat ccca cccc cccs cccv ccoc ccsa ccss ccst cctc cctt cctv ccvo ccvs coas coat coca coco coct coos coot cosa cosc coso coss cost cota cotc coto cots cott cova covo csaa csac csao csas csat csav cscc csco cscs csos csot cssa csta cstc csto csts ctca ctos ctot ctsa ctsc ctss ctta ctts ctvo ctvt cvac cvas cvca cvcc cvss oasc oass oast oats oavs ocac ocas ocat occa occc occt ocos ocsa oct- octa octo octs ooaa oooo ooos oosa oost oots osas osat osca oscc osco osoo osos osov ossa osso osta ostc osts otac otas oto- otoo otos otov otsa otso otta otto otts ovcs ovo- ovoo ovot s-os s-vt sa-c saac saas saat saca sacc saco sacs sact saos sasa sasc saso sass sast sata satc sato sats satt sava savo savs scaa scac scas scat sccc sccs scct scoo scot scsa scsc scso scst sctc scto scts sctv soas soat soca soco socs soos soot sosa soso soss sost sosv sota sotc soto sots sova sovo sovs ssaa ssac ssao ssas ssat ssca sscc sscs ssoc ssot sssa sssc ssss ssta sstc ssts st-v stac stas stat stca stcc stcs stoa stoo stos stot stss sttc stvs svcc svcs svsc taa- taas taat taca tacc taco tacs tact tacv taoa taos tasa tasc tass tast tata tato tats tatt tatv tava tavo tavs tcca tccc tcos tcov tctc tcts toas toat toca toco tooa toos toot tosa tosc toso toss tost tota totc toto tots tott tova tovo tsaa tsao tsat tsav tsca tscc tsos tssa tsst tstc tsts ttss tttt tvac tvos tvsa tvss tvtv vaas vaat vaca vaco vacs vas- vasa vaso vass vast vata vato vats vatt vava vavs vcat voat voca vooc voot vosa voso voss vota voto vssc vsta vsto vtac vvvv