-al a-a a-b a-i aaa aab aai aal aan aas ab- aba abb abi abl abn abs ai- aia aib aii ail ain ais al- ala alb ali all aln als an- ana anb ani anl ann ans as- asa asb asi asl asn ass baa bab bai bal ban bas bba bbb bbi bbl bbn bbs bi- bia bib bii bil bin bis bla blb bli bll bln bls bna bnb bni bnl bnn bns bsa bsb bsi bsl bsn bss ia- iaa iab iai ial ian ias iba ibb ibi ibl ibn ibs iia iib iii iil iin iis il- ila ilb ili ill iln ils in- ina inb ini inl inn ins is- isa isb isi isl isn iss la- laa lab lai lal lan las lba lbb lbi lbl lbs lia lib lii lil lin lis lla llb lli lll lln lls lna lnb lni lnl lnn lns lsa lsb lsi lsl lsn lss n-i naa nab nai nal nan nas nba nbb nbi nbl nbn nbs nia nib nii nil nin nis nla nlb nli nll nln nls nna nnb nni nnl nnn nns nsa nsb nsi nsl nsn nss saa sab sai sal san sas sba sbb sbi sbl sbn sbs sia sib sii sil sin sis sla slb sli sll sln sls sna snb sni snl snn sns ss- ssa ssb ssi ssl ssn sss