a-a a-b a-i aaa aab aai aak aan aao aau ab- aba abb abi abk abn abo abu ai- aia aib aii aik ain aio aiu aka akb aki akk akn ako aku an- ana anb ani ank ann ano anu aoa aob aoi aok aon aoo aou au- aua aub aui auk aun auo b-u baa bab bai bak ban bao bau bba bbb bbi bbk bbn bbo bbu bi- bia bib bii bik bin bio biu bka bkb bkk bkn bko bna bnb bni bnk bnn bno bnu boa bob boi bok bon boo bou bua bub bui buk bun buo buu ia- iaa iab iai ian iao iau iba ibb ibi ibk ibn ibo ibu iia iib iii iin iio iiu ika ikb iki ikk iko iku in- ina inb ini ink inn ino inu io- ioa iob ioi ion ioo iou iu- iua iub iui ka- kaa kab kai kak kan kao kau kba kbb kbi kbk kbn kbo kbu kia kib kii kik kin kio kiu kkb kki kkk kkn kku kn- kna kni knk knn kno knu koa kob koi kok kon koo kou kub kui kuk kun kuu n-i naa nab nai nak nan nao nau nba nbb nbi nbk nbn nbo nbu nia nib nii nik nin nio niu nka nki nkk nkn nko nku nna nnb nni nnk nnn nno nnu no- noa nob noi nok non noo nou nua nub nui nuk nun nuo nuu o-i oaa oab oai oak oan oao oau ob- oba obb obi obk obn obo obu oia oib oii oik oin oio oiu oka okb oki okk oko oku on- ona onb oni onk onn ono onu oo- ooa oob ooi ook oon ooo ou- oua oui ouk oun ouo ua- uaa uab uai uak uan uao uau uba ubb ubi ubk ubn ubo ubu uia uib uii uin uio uiu uka ukb uki ukk ukn uku un- una unb uni unk unn uno unu uoa uob uok uon uoo uua uun uuu