a-a a-b aaa aab aad aah aak aar aau ab- aba abb abd abh abk abr abu ad- ada adb add adh adk adr adu aha ahb ahd ahh ahk ahr ahu aka akb akd akh akk akr aku ar- ara arb ard arh ark arr aru au- aua aub aud auh auk aur b-u baa bab bad bah bak bar bau bba bbb bbd bbh bbk bbr bbu bda bdb bdd bdh bdk bdr bdu bha bhb bhd bhh bhk bhr bhu bka bkb bkk bkr bra brb brd brh brk brr bru bua bub bud buh buk bur buu daa dab dad dah dak dar dau dba dbb dbd dbh dbk dbr dbu dda ddb ddd ddh ddk ddr ddu dh- dha dhb dhd dhh dhk dhr dhu dka dkb dkk dkr dku dra drb drd drk drr dru dua dub dud duh duk dur haa hab had hah hak har hau hba hbb hbd hbh hbk hbr hbu hda hdb hdd hdh hdk hdr hdu hha hhb hhd hhh hhk hhr hhu hka hkb hkd hkh hkk hkr hku hr- hra hrb hrd hrh hrk hrr hru hua hub hud huh huk hur huu ka- kaa kab kad kah kak kar kau kba kbb kbd kbh kbk kbr kbu kda kdb kdh kdk kdr kdu kha khh khk khr khu kkb kkh kkk kkr kku kra krd krk krr kru kub kud kuh kuk kur kuu ra- raa rab rad rah rak rar rau rba rbb rbd rbh rbk rbr rbu rda rdb rdd rdh rdr rdu rh- rha rhb rhd rhh rhr rhu rkb rkk rku rra rrb rrd rrh rrk rrr rru rua rub rud ruh ruk rur ruu ua- uaa uab uad uah uak uar uau uba ubb ubh ubk ubr ubu uda udb udd udk udr udu uha uhb uhd uhh uhr uhu uka ukb ukk ukr uku ur- ura urb urd urk urr uru uua uur uuu