a-a a-b a-i aaa aab aag aai aak aan aao aar aau ab- aba abb abg abi abk abn abo abr abu ag- aga agb agg agi agk agn ago agr agu ai- aia aib aig aii aik ain aio air aiu aka akb akg aki akk akn ako akr aku an- ana anb ang ani ank ann ano anr anu aoa aob aog aoi aok aon aoo aor aou ar- ara arb arg ari ark arn aro arr aru au- aua aub aug aui auk aun auo aur b-u baa bab bag bai bak ban bao bar bau bba bbb bbg bbi bbk bbn bbo bbr bbu bga bgb bgg bgi bgk bgn bgo bgr bgu bi- bia bib big bii bik bin bio bir biu bka bkb bkg bkk bkn bko bkr bna bnb bng bni bnk bnn bno bnr bnu boa bob bog boi bok bon boo bor bou bra brb brg bri brk brn bro brr bru bua bub bug bui buk bun buo bur buu gaa gab gag gai gak gan gao gar gau gba gbg gbi gbk gbn gbo gbr gbu gga ggb ggg ggi ggn ggo ggr ggu gia gib gig gii gik gin gio gir giu gka gkb gkn gko gna gnb gni gnn gno gnr gnu goa gob gog goi gok gon goo gor gou gra grb grg gri grk grn gro grr gru gu- gua gub gug gui guk gun guo gur guu ia- iaa iab iag iai ian iao iar iau iba ibb ibg ibi ibk ibn ibo ibr ibu iga igb igg igi igk ign igo igr igu iia iib iii iin iio iir iiu ika ikb iki ikk iko ikr iku in- ina inb ing ini ink inn ino inr inu io- ioa iob iog ioi ion ioo ior iou ir- ira irb irg iri irk irn iro irr iru iu- iua iub iug iui iur ka- kaa kab kag kai kak kan kao kar kau kba kbb kbi kbk kbn kbo kbr kbu kga kgb kgi kgo kgu kia kib kig kii kik kin kio kir kiu kkb kki kkk kkn kkr kku kn- kna kng kni knk knn kno knr knu koa kob kog koi kok kon koo kor kou kra krg kri krk krn kro krr kru kub kug kui kuk kun kur kuu n-i naa nab nag nai nak nan nao nar nau nba nbb nbg nbi nbk nbn nbo nbr nbu nga ngb ngg ngi ngk ngn ngo ngu nia nib nig nii nik nin nio nir niu nka nki nkk nkn nko nkr nku nna nnb nng nni nnk nnn nno nnu no- noa nob nog noi nok non noo nor nou nra nrb nrg nri nrk nrn nro nrr nru nua nub nug nui nuk nun nuo nur nuu o-i oaa oab oag oai oak oan oao oar oau ob- oba obb obg obi obk obn obo obr obu oga ogg ogi ogn ogo oia oib oii oik oin oio oir oiu oka okb okg oki okk oko okr oku on- ona onb ong oni onk onn ono onr onu oo- ooa oob oog ooi ook oon ooo oor or- ora orb org ori ork orn oro orr oru ou- oua oui ouk oun ouo our ra- raa rab rag rai rak ran rao rar rau rba rbb rbg rbi rbk rbn rbo rbr rbu rga rgb rgg rgi rgk rgn rgo rgr ria rib rig rii rik rin rio rir rkb rkg rkk rko rku rna rnb rng rni rnn rno rnr rnu roa rob rog roi rok ron roo ror rou rra rrb rrg rri rrk rrn rrr rru rua rub rug rui ruk run ruo rur ruu ua- uaa uab uag uai uak uan uao uar uau uba ubb ubg ubi ubk ubn ubo ubr ubu uga ugb ugg ugi ugk ugn ugo ugr ugu uia uib uig uii uin uio uir uiu uka ukb uki ukk ukn ukr uku un- una unb ung uni unk unn uno unr unu uoa uob uog uok uon uoo uor ur- ura urb urg uri urk urn uro urr uru uua uug uun uur uuu