a-a a-c a-t aaa aac aad aat aav ac- aca acc acd act acv ad- ada adc add adt adv at- ata atc atd att atv av- ava avc avd avt c-- caa cac cad cat cav cca ccc ccd cct ccv cda cdc cdd cdt cdv cta ctc ctd ctt ctv cva cvc cvd cvt cvv daa dac dad dat dav dca dcc dcd dct dcv dda ddc ddd ddt dta dtc dtd dtt dtv dva dvc dvd dvt taa tac tad tat tav tca tcc tcd tct tcv tda tdc tdd tdt tdv tta ttc ttd ttt ttv tva tvc tvd tvt v-a vaa vac vad vat vav vca vcc vcd vct vdc vdd vdt vdv vta vtc vtt vtv vva vvc vvt vvv