-al -ol a-a a-b a-i a-t aaa aab aai aak aal aan aao aat ab- aba abb abi abk abl abn abo abt ai- aia aib aii aik ail ain aio ait aka akb aki akk akl akn ako al- ala alb ali alk all aln alo alt an- ana anb ani ank anl ann ano ant aoa aob aoi aok aol aon aoo aot at- ata atb ati atl atn ato att baa bab bai bak bal ban bao bat bba bbb bbi bbk bbl bbn bbo bbt bi- bia bib bii bik bil bin bio bit bka bkb bkk bkl bkn bko bkt bla blb bli blk bll bln blo blt bna bnb bni bnk bnl bnn bno bnt boa bob boi bok bol bon boo bot bta btb bti btk btl btn bto btt ia- iaa iab iai ial ian iao iat iba ibb ibi ibk ibl ibn ibo ibt iia iib iii iil iin iio iit ika ikb iki ikk ikl iko ikt il- ila ilb ili ilk ill iln ilo ilt in- ina inb ini ink inl inn ino int io- ioa iob ioi iol ion ioo iot ita itb iti itk itl itn ito itt k-t ka- kaa kab kai kak kal kan kao kat kba kbb kbi kbk kbl kbn kbo kia kib kii kik kil kin kio kit kkb kki kkk kkl kkn kkt kl- kla klb kli klo klt kn- kna kni knk knl knn kno knt koa kob koi kok kol kon koo kot kta ktb ktk ktl ktn kto ktt la- laa lab lai lak lal lan lao lat lba lbb lbi lbk lbl lbo lbt lia lib lii lik lil lin lio lit lka lkb lkl lkt lla llb lli llk lll lln llo llt lna lnb lni lnk lnl lnn lno lnt loa lob loi lok lol lon loo lot lta ltb lti ltk ltl lto ltt n-i naa nab nai nak nal nan nao nat nba nbb nbi nbk nbl nbn nbo nbt nia nib nii nik nil nin nio nit nka nki nkk nkn nko nkt nla nlb nli nlk nll nln nlo nlt nna nnb nni nnk nnl nnn nno nnt no- noa nob noi nok nol non noo not nta ntb nti ntk ntn nto ntt o-i oaa oab oai oak oal oan oao oat ob- oba obb obi obk obl obn obo obt oia oib oii oik oil oin oio oit oka okb oki okk okl oko ola olb oli olk oll oln olo olt on- ona onb oni onk onl onn ono ont oo- ooa oob ooi ook ool oon ooo oot ot- ota otb oti otk otl otn oto ott taa tab tai tak tal tan tao tat tba tbb tbi tbk tbl tbn tbo tbt tia tib tii tik til tin tio tit tka tkb tkk tkl tko tkt tla tli tlk tll tln tlo tlt tna tnb tni tnk tnl tnn tno tnt to- toa tob toi tok tol ton too tot tta ttb tti ttk ttl ttn tto ttt