a-a aaa aad aak aar aav ad- ada add adk adr adv aka akd akk akr akv ar- ara ard ark arr arv av- ava avd avk avr daa dad dak dar dav dda ddd ddk ddr dka dkk dkr dra drd drk drr drv dva dvd dvk dvr ka- kaa kad kak kar kav kda kdk kdr kkk kkr kkv kra krd krk krr krv kva kvk kvr kvv ra- raa rad rak rar rav rda rdd rdr rdv rkk rkv rra rrd rrk rrr rva rvd rvr rvv v-a vaa vad vak var vav vdd vdk vdr vdv vka vra vrd vrk vrr vva vvr vvv