a-a a-b aaa aab aad aan aao aau aav aay ab- aba abb abd abn abo abu abv aby ad- ada adb add adn ado adu adv ady an- ana anb and ann ano anu anv any aoa aob aod aon aoo aou aov au- aua aub aud aun auo auv av- ava avb avd avn avo avu avy ay- aya ayd ayn ayo ayu b-u baa bab bad ban bao bau bav bay bba bbb bbd bbn bbo bbu bby bda bdb bdd bdo bdu bdv bdy bna bnb bnd bnn bno bnu bnv boa bob bod bon boo bou bov boy bua bub bud bun buo buu buy bva bvb bvd bvn bvo bvu bvv by- bya byd byn byo byu daa dab dad dan dao dau dav day dba dbb dbd dbn dbo dbu dbv dby dda ddb ddd ddn ddo ddu ddy dna dnb dnd dnn dno dny doa dob dod don doo dou dov doy dua dub dud dun duo duv duy dva dvb dvd dvn dvu dy- dya dyb dyd dyn dyo dyu dyy naa nab nad nan nao nau nav nay nba nbb nbd nbn nbo nbu nbv nda ndb ndd ndn ndo ndu ndv ndy nna nnb nnn nno nnu nnv no- noa nob nod non noo nou nov noy nua nub nud nun nuo nuu nuv nuy nva nvb nvd nvn nvu nvv nya nyd nyn nyo nyu nyy oaa oab oad oan oao oau oav ob- oba obb obd obn obo obu obv oby oda odb odd odn odo odu odv on- ona onb ond onn ono onu ony oo- ooa oob ood oon ooo oov ou- oua oud oun ouo ov- ova ovb ovd ovo ovv oya oyd oyo ua- uaa uab uad uan uao uau uav uay uba ubb ubn ubo ubu ubv uby uda udb udd udn udo udu udv un- una unb und unn uno unu unv uny uoa uob uod uon uoo uua uun uuu uva uvb uvo uvu uvv uyo uyu v-a vaa vab vad van vao vau vav vay vba vbd vbo vbv vdb vdd vdo vdu vdv vn- vna vnd vno vnu vnv voa vob vod von voo vou vov voy vuv vva vvb vvo vvv vyd vyn yaa yab yad yan yao yau yav yay yby yda ydn ydo ydy yna ynd ynn ynu yny yob yod yon yoo you yoy yua yud yun yuo yuu yuv yuy yva yvo yvy yyb yyu yyy