a-a a-t aaa aap aar aat aav ap- apa app apr apt apv ar- ara arp arr art arv at- ata atp atr att atv av- ava avp avr avt p-p paa pap par pat pav ppa ppp ppr ppt ppv pra prp prr prt prv pt- pta ptp ptr ptt ptv pva pvp pvr pvt pvv ra- raa rap rar rat rav rpa rpp rpr rpt rpv rra rrp rrr rrt rta rtp rtr rtt rtv rva rvp rvr rvt rvv taa tap tar tat tav tpa tpp tpr tpt tpv tra trp trr trt trv tta ttp ttr ttt ttv tva tvp tvr tvt v-a vaa vap var vat vav vpa vpp vpr vpt vra vrp vrr vrt vta vtr vtt vtv vva vvr vvt vvv