a-a a-c a-t aaa aac aar aas aat aav ac- aca acc acr acs act acv ar- ara arc arr ars art arv as- asa asc asr ass ast asv at- ata atc atr ats att atv av- ava avc avr avs avt c-- caa cac car cas cat cav cca ccc ccr ccs cct ccv cra crc crr crs crt crv csa csc csr css cst csv cta ctc ctr cts ctt ctv cva cvc cvr cvs cvt cvv ra- raa rac rar ras rat rav rca rcc rcr rcs rct rcv rra rrc rrr rrs rrt rsa rsc rsr rss rst rsv rta rtc rtr rts rtt rtv rva rvc rvr rvs rvt rvv saa sac sar sas sat sav sca scc scr scs sct scv sr- sra src srr srs srt srv ss- ssa ssc ssr sss sst ssv sta stc str sts stt stv sva svc svr svs svt svv taa tac tar tas tat tav tca tcc tcr tcs tct tcv tra trc trr trs trt trv tsa tsc tsr tss tst tsv tta ttc ttr tts ttt ttv tva tvc tvr tvs tvt v-a vaa vac var vas vat vav vca vcc vcr vcs vct vra vrc vrr vrs vrt vsa vsc vsr vss vst vsv vta vtc vtr vts vtt vtv vva vvc vvr vvs vvt vvv