-al -ol a-a a-b a-i aaa aab aai aak aal aan aao ab- aba abb abi abk abl abn abo ai- aia aib aii aik ail ain aio aka akb aki akk akl akn ako al- ala alb ali alk all aln alo an- ana anb ani ank anl ann ano aoa aob aoi aok aol aon aoo baa bab bai bak bal ban bao bba bbb bbi bbk bbl bbn bbo bi- bia bib bii bik bil bin bio bka bkb bkk bkl bkn bko bla blb bli blk bll bln blo bna bnb bni bnk bnl bnn bno boa bob boi bok bol bon boo ia- iaa iab iai ial ian iao iba ibb ibi ibk ibl ibn ibo iia iib iii iil iin iio ika ikb iki ikk ikl iko il- ila ilb ili ilk ill iln ilo in- ina inb ini ink inl inn ino io- ioa iob ioi iol ion ioo ka- kaa kab kai kak kal kan kao kba kbb kbi kbk kbl kbn kbo kia kib kii kik kil kin kio kkb kki kkk kkl kkn kl- kla klb kli klo kn- kna kni knk knl knn kno koa kob koi kok kol kon koo la- laa lab lai lak lal lan lao lba lbb lbi lbk lbl lbo lia lib lii lik lil lin lio lka lkb lkl lla llb lli llk lll lln llo lna lnb lni lnk lnl lnn lno loa lob loi lok lol lon loo n-i naa nab nai nak nal nan nao nba nbb nbi nbk nbl nbn nbo nia nib nii nik nil nin nio nka nki nkk nkn nko nla nlb nli nlk nll nln nlo nna nnb nni nnk nnl nnn nno no- noa nob noi nok nol non noo o-i oaa oab oai oak oal oan oao ob- oba obb obi obk obl obn obo oia oib oii oik oil oin oio oka okb oki okk okl oko ola olb oli olk oll oln olo on- ona onb oni onk onl onn ono oo- ooa oob ooi ook ool oon ooo