a-a a-b aaa aab aad aah aak aan aao aav ab- aba abb abd abh abk abn abo abv ad- ada adb add adh adk adn ado adv aha ahb ahd ahh ahk ahn aho ahv aka akb akd akh akk akn ako akv an- ana anb and anh ank ann ano anv aoa aob aod aoh aok aon aoo aov av- ava avb avd avh avk avn avo baa bab bad bah bak ban bao bav bba bbb bbd bbh bbk bbn bbo bda bdb bdd bdh bdk bdo bdv bha bhb bhd bhh bhk bho bhv bka bkb bkk bkn bko bkv bna bnb bnd bnk bnn bno bnv boa bob bod boh bok bon boo bov bva bvb bvd bvh bvk bvn bvo bvv daa dab dad dah dak dan dao dav dba dbb dbd dbh dbk dbn dbo dbv dda ddb ddd ddh ddk ddn ddo dh- dha dhb dhd dhh dhk dho dka dkb dkk dko dna dnb dnd dnh dnk dnn dno doa dob dod doh dok don doo dov dva dvb dvd dvh dvk dvn haa hab had hah hak han hao hav hba hbb hbd hbh hbk hbn hbo hbv hda hdb hdd hdh hdk hdn hdo hdv hha hhb hhd hhh hhk hhn hho hhv hka hkb hkd hkh hkk hkn hko hna hnb hnd hnh hnk hnn hno hnv hoa hob hod hoh hok hon hoo hov hv- hva hvb hvd hvk hvn hvo hvv ka- kaa kab kad kah kak kan kao kav kba kbb kbd kbh kbk kbn kbo kda kdb kdh kdk kdo kha khh khk khn kho khv kkb kkh kkk kkn kkv kn- kna knd knk knn kno koa kob kod koh kok kon koo kva kvb kvh kvk kvn kvo kvv naa nab nad nah nak nan nao nav nba nbb nbd nbk nbn nbo nbv nda ndb ndd ndh ndk ndn ndo ndv nha nhb nhd nhh nhk nhn nhv nka nkk nkn nko nna nnb nnh nnk nnn nno nnv no- noa nob nod noh nok non noo nov nva nvb nvd nvh nvk nvn nvv oaa oab oad oah oak oan oao oav ob- oba obb obd obh obk obn obo obv oda odb odd odh odn odo odv oha ohd ohh ohn oho oka okb okd okk oko on- ona onb ond onh onk onn ono oo- ooa oob ood ooh ook oon ooo oov ov- ova ovb ovd ovh ovo ovv v-a vaa vab vad vah vak van vao vav vba vbd vbh vbk vbo vbv vdb vdd vdh vdk vdo vdv vh- vha vhb vhd vho vka vkb vn- vna vnd vno vnv voa vob vod voh vok von voo vov vva vvb vvo vvv