a-a a-b a-i aaa aab aah aai aak aao aar aau ab- aba abb abh abi abk abo abr abu aha ahb ahh ahi ahk aho ahr ahu ai- aia aib aih aii aik aio air aiu aka akb akh aki akk ako akr aku aoa aob aoh aoi aok aoo aor aou ar- ara arb arh ari ark aro arr aru au- aua aub auh aui auk auo aur b-u baa bab bah bai bak bao bar bau bba bbb bbh bbi bbk bbo bbr bbu bha bhb bhh bhi bhk bho bhr bhu bi- bia bib bih bii bik bio bir biu bka bkb bkk bko bkr boa bob boh boi bok boo bor bou bra brb brh bri brk bro brr bru bua bub buh bui buk buo bur buu h-i haa hab hah hai hak hao har hau hba hbb hbh hbi hbk hbo hbr hbu hha hhb hhh hhi hhk hho hhr hhu hia hib hih hii hik hio hir hiu hka hkb hkh hki hkk hko hkr hku hoa hob hoh hoi hok hoo hor hou hr- hra hrb hrh hri hrk hro hrr hru hua hub huh hui huk huo hur huu ia- iaa iab iah iai iao iar iau iba ibb ibh ibi ibk ibo ibr ibu iha ihb ihh ihi ihk iho ihr ihu iia iib iih iii iio iir iiu ika ikb iki ikk iko ikr iku io- ioa iob ioh ioi ioo ior iou ir- ira irb iri irk iro irr iru iu- iua iub iui iur ka- kaa kab kah kai kak kao kar kau kba kbb kbh kbi kbk kbo kbr kbu kha khh khi khk kho khr khu kia kib kih kii kik kio kir kiu kkb kkh kki kkk kkr kku koa kob koh koi kok koo kor kou kra kri krk kro krr kru kub kuh kui kuk kur kuu o-i oaa oab oah oai oak oao oar oau ob- oba obb obh obi obk obo obr obu oha ohh ohi oho ohr ohu oia oib oii oik oio oir oiu oka okb oki okk oko okr oku oo- ooa oob ooh ooi ook ooo oor or- ora orb orh ori ork oro orr oru ou- oua ouh oui ouk ouo our ra- raa rab rah rai rak rao rar rau rba rbb rbh rbi rbk rbo rbr rbu rh- rha rhb rhh rhi rho rhr rhu ria rib rih rii rik rio rir rkb rkk rko rku roa rob roh roi rok roo ror rou rra rrb rrh rri rrk rrr rru rua rub ruh rui ruk ruo rur ruu ua- uaa uab uah uai uak uao uar uau uba ubb ubh ubi ubk ubo ubr ubu uha uhb uhh uhi uho uhr uhu uia uib uii uio uir uiu uka ukb uki ukk ukr uku uoa uob uok uoo uor ur- ura urb uri urk uro urr uru uua uur uuu