-al a-a a-b a-i a-t aaa aab aai aak aal aan aas aat ab- aba abb abi abk abl abn abs abt ai- aia aib aii aik ail ain ais ait aka akb aki akk akl akn aks al- ala alb ali alk all aln als alt an- ana anb ani ank anl ann ans ant as- asa asb asi ask asl asn ass ast at- ata atb ati atl atn ats att baa bab bai bak bal ban bas bat bba bbb bbi bbk bbl bbn bbs bbt bi- bia bib bii bik bil bin bis bit bka bkb bkk bkl bkn bks bkt bla blb bli blk bll bln bls blt bna bnb bni bnk bnl bnn bns bnt bsa bsb bsi bsk bsl bsn bss bst bta btb bti btk btl btn bts btt ia- iaa iab iai ial ian ias iat iba ibb ibi ibk ibl ibn ibs ibt iia iib iii iil iin iis iit ika ikb iki ikk ikl iks ikt il- ila ilb ili ilk ill iln ils ilt in- ina inb ini ink inl inn ins int is- isa isb isi isk isl isn iss ist ita itb iti itk itl itn its itt k-t ka- kaa kab kai kak kal kan kas kat kba kbb kbi kbk kbl kbn kbs kia kib kii kik kil kin kis kit kkb kki kkk kkl kkn kks kkt kl- kla klb kli kls klt kn- kna kni knk knl knn knt ksa ksb ksi ksk ksl ksn kss kst kta ktb ktk ktl ktn kts ktt la- laa lab lai lak lal lan las lat lba lbb lbi lbk lbl lbs lbt lia lib lii lik lil lin lis lit lka lkb lkl lks lkt lla llb lli llk lll lln lls llt lna lnb lni lnk lnl lnn lns lnt lsa lsb lsi lsk lsl lsn lss lst lta ltb lti ltk ltl lts ltt n-i naa nab nai nak nal nan nas nat nba nbb nbi nbk nbl nbn nbs nbt nia nib nii nik nil nin nis nit nka nki nkk nkn nks nkt nla nlb nli nlk nll nln nls nlt nna nnb nni nnk nnl nnn nns nnt nsa nsb nsi nsk nsl nsn nss nst nta ntb nti ntk ntn nts ntt saa sab sai sak sal san sas sat sba sbb sbi sbk sbl sbn sbs sbt sia sib sii sik sil sin sis sit sk- ska skb ski skk skl sks skt sla slb sli slk sll sln sls slt sna snb sni snk snl snn sns snt ss- ssa ssb ssi ssk ssl ssn sss sst sta stb sti stk stl stn sts stt taa tab tai tak tal tan tas tat tba tbb tbi tbk tbl tbn tbs tbt tia tib tii tik til tin tis tit tka tkb tkk tkl tks tkt tla tli tlk tll tln tls tlt tna tnb tni tnk tnl tnn tns tnt tsa tsb tsi tsk tsl tsn tss tst tta ttb tti ttk ttl ttn tts ttt