a-a a-b a-i aaa aab aai aam aan aao aar aau ab- aba abb abi abm abn abo abr abu ai- aia aib aii aim ain aio air aiu ama amb ami amm amn amo amr amu an- ana anb ani anm ann ano anr anu aoa aob aoi aom aon aoo aor aou ar- ara arb ari arm arn aro arr aru au- aua aub aui aum aun auo aur b-u baa bab bai bam ban bao bar bau bba bbb bbi bbm bbn bbo bbr bbu bi- bia bib bii bim bin bio bir biu bma bmb bmi bmm bmn bmo bmr bmu bna bnb bni bnn bno bnr bnu boa bob boi bom bon boo bor bou bra brb bri brm brn bro brr bru bua bub bui bum bun buo bur buu ia- iaa iab iai iam ian iao iar iau iba ibb ibi ibm ibn ibo ibr ibu iia iib iii iim iin iio iir iiu im- ima imb imi imm imn imo imu in- ina inb ini inm inn ino inr inu io- ioa iob ioi iom ion ioo ior iou ir- ira irb iri irm irn iro irr iru iu- iua iub iui ium iur m-o m-r maa mab mai mam man mao mar mau mba mbb mbi mbm mbo mbr mbu mi- mia mib mii mim min mio mir miu mma mmb mmi mmm mmn mmo mmr mmu mna mnb mni mnm mnn mno mnr mnu moa mob moi mom mon moo mor mou mra mrb mri mrm mrn mro mrr mru mua mub mui mum mun mur muu n-i naa nab nai nam nan nao nar nau nba nbb nbi nbm nbn nbo nbr nbu nia nib nii nim nin nio nir niu nma nmb nmi nmm nmn nmo nmr nmu nna nnb nni nnm nnn nno nnu no- noa nob noi nom non noo nor nou nra nrb nri nrm nrn nro nrr nru nua nub nui num nun nuo nur nuu o-i oaa oab oai oam oan oao oar oau ob- oba obb obi obm obn obo obr obu oia oib oii oim oin oio oir oiu om- oma omb omi omm omn omo omr omu on- ona onb oni onn ono onr onu oo- ooa oob ooi oom oon ooo oor or- ora orb ori orm orn oro orr oru ou- oua oui oum oun ouo our ra- raa rab rai ram ran rao rar rau rba rbb rbi rbm rbn rbo rbr rbu ria rib rii rim rin rio rir rma rmb rmi rmm rmn rmo rmr rna rnb rni rnm rnn rno rnr rnu roa rob roi rom ron roo ror rou rra rrb rri rrm rrn rrr rru rua rub rui rum run ruo rur ruu ua- uaa uab uai uam uan uao uar uau uba ubb ubi ubn ubo ubr ubu uia uib uii uim uin uio uir uiu um- uma umb umi umm umn umo umr umu un- una unb uni unm unn uno unr unu uoa uob uom uon uoo uor ur- ura urb uri urm urn uro urr uru uua uum uun uur uuu