a-a a-c a-t aaa aac aad aao aas aat aav ac- aca acc acd aco acs act acv ad- ada adc add ado ads adt adv aoa aoc aod aoo aos aot aov as- asa asc asd aso ass ast asv at- ata atc atd ato ats att atv av- ava avc avd avo avs avt c-- caa cac cad cao cas cat cav cca ccc ccd cco ccs cct ccv cda cdc cdd cdo cds cdt cdv co- coa coc cod coo cos cot cov csa csc csd cso css cst csv cta ctc ctd cto cts ctt ctv cva cvc cvd cvo cvs cvt cvv daa dac dad dao das dat dav dca dcc dcd dco dcs dct dcv dda ddc ddd ddo dds ddt doa doc dod doo dos dot dov dsa dsc dsd dso dss dst dsv dta dtc dtd dto dts dtt dtv dva dvc dvd dvs dvt oaa oac oad oao oas oat oav oc- oca occ ocd oco ocs oct ocv oda odc odd odo ods odt odv oo- ooa ooc ood ooo oos oot oov os- osa osc osd oso oss ost osv ot- ota otc otd oto ots ott otv ov- ova ovc ovd ovo ovs ovv saa sac sad sao sas sat sav sca scc scd sco scs sct scv sda sdc sdd sdo sds sdt sdv soa soc sod soo sos sot sov ss- ssa ssc ssd sso sss sst ssv sta stc std sto sts stt stv sva svc svd svo svs svt svv taa tac tad tao tas tat tav tca tcc tcd tco tcs tct tcv tda tdc tdd tdo tds tdt tdv to- toa toc tod too tos tot tov tsa tsc tsd tso tss tst tsv tta ttc ttd tto tts ttt ttv tva tvc tvd tvo tvs tvt v-a vaa vac vad vao vas vat vav vca vcc vcd vco vcs vct vdc vdd vdo vds vdt vdv voa voc vod voo vos vot vov vsa vsc vsd vso vss vst vsv vta vtc vto vts vtt vtv vva vvc vvo vvs vvt vvv