a-a a-b aaa aab aad aah aar aav ab- aba abb abd abh abr abv ad- ada adb add adh adr adv aha ahb ahd ahh ahr ahv ar- ara arb ard arh arr arv av- ava avb avd avh avr baa bab bad bah bar bav bba bbb bbd bbh bbr bda bdb bdd bdh bdr bdv bha bhb bhd bhh bhr bhv bra brb brd brh brr brv bva bvb bvd bvh bvr bvv daa dab dad dah dar dav dba dbb dbd dbh dbr dbv dda ddb ddd ddh ddr dh- dha dhb dhd dhh dhr dra drb drd drr drv dva dvb dvd dvh dvr haa hab had hah har hav hba hbb hbd hbh hbr hbv hda hdb hdd hdh hdr hdv hha hhb hhd hhh hhr hhv hr- hra hrb hrd hrh hrr hrv hv- hva hvb hvd hvr hvv ra- raa rab rad rah rar rav rba rbb rbd rbh rbr rda rdb rdd rdh rdr rdv rh- rha rhb rhd rhh rhr rhv rra rrb rrd rrh rrr rva rvb rvd rvh rvr rvv v-a vaa vab vad vah var vav vba vbd vbh vbr vbv vdb vdd vdh vdr vdv vh- vha vhb vhd vra vrb vrd vrh vrr vva vvb vvr vvv