a-a a-c a-t aaa aac aak aao aas aat aav ac- aca acc ack aco acs act acv aka akc akk ako aks akv aoa aoc aok aoo aos aot aov as- asa asc ask aso ass ast asv at- ata atc ato ats att atv av- ava avc avk avo avs avt c-- caa cac cak cao cas cat cav cca ccc cck cco ccs cct ccv cka ckc cko cks ckt co- coa coc cok coo cos cot cov csa csc csk cso css cst csv cta ctc ctk cto cts ctt ctv cva cvc cvk cvo cvs cvt cvv k-t ka- kaa kac kak kao kas kat kav kca kcc kck kcs kct kkc kkk kks kkt kkv koa koc kok koo kos kot ksa ksc ksk kso kss kst ksv kta ktc ktk kto kts ktt ktv kva kvk kvo kvs kvv oaa oac oak oao oas oat oav oc- oca occ ock oco ocs oct ocv oka okc okk oko oks oo- ooa ooc ook ooo oos oot oov os- osa osc osk oso oss ost osv ot- ota otc otk oto ots ott otv ov- ova ovc ovo ovs ovv saa sac sak sao sas sat sav sca scc sck sco scs sct scv sk- ska skc skk sko sks skt soa soc sok soo sos sot sov ss- ssa ssc ssk sso sss sst ssv sta stc stk sto sts stt stv sva svc svk svo svs svt svv taa tac tak tao tas tat tav tca tcc tck tco tcs tct tcv tka tkc tkk tko tks tkt to- toa toc tok too tos tot tov tsa tsc tsk tso tss tst tsv tta ttc ttk tto tts ttt ttv tva tvc tvk tvo tvs tvt v-a vaa vac vak vao vas vat vav vca vcc vco vcs vct vka vkt voa voc vok voo vos vot vov vsa vsc vsk vso vss vst vsv vta vtc vtk vto vts vtt vtv vva vvc vvo vvs vvt vvv