a-a a-t aaa aad aap aat aav ad- ada add adp adt adv ap- apa apd app apt apv at- ata atd atp att atv av- ava avd avp avt daa dad dap dat dav dda ddd ddp ddt dpa dpd dpp dpt dpv dta dtd dtp dtt dtv dva dvd dvp dvt p-p paa pad pap pat pav pda pdd pdp pdt pdv ppa ppd ppp ppt ppv pt- pta ptd ptp ptt ptv pva pvd pvp pvt pvv taa tad tap tat tav tda tdd tdp tdt tdv tpa tpd tpp tpt tpv tta ttd ttp ttt ttv tva tvd tvp tvt v-a vaa vad vap vat vav vdd vdp vdt vdv vpa vpd vpp vpt vta vtt vtv vva vvt vvv