-al -ol a-a a-b a-i aaa aab aai aal aan aao aas ab- aba abb abi abl abn abo abs ai- aia aib aii ail ain aio ais al- ala alb ali all aln alo als an- ana anb ani anl ann ano ans aoa aob aoi aol aon aoo aos as- asa asb asi asl asn aso ass baa bab bai bal ban bao bas bba bbb bbi bbl bbn bbo bbs bi- bia bib bii bil bin bio bis bla blb bli bll bln blo bls bna bnb bni bnl bnn bno bns boa bob boi bol bon boo bos bsa bsb bsi bsl bsn bso bss ia- iaa iab iai ial ian iao ias iba ibb ibi ibl ibn ibo ibs iia iib iii iil iin iio iis il- ila ilb ili ill iln ilo ils in- ina inb ini inl inn ino ins io- ioa iob ioi iol ion ioo ios is- isa isb isi isl isn iso iss la- laa lab lai lal lan lao las lba lbb lbi lbl lbo lbs lia lib lii lil lin lio lis lla llb lli lll lln llo lls lna lnb lni lnl lnn lno lns loa lob loi lol lon loo los lsa lsb lsi lsl lsn lso lss n-i naa nab nai nal nan nao nas nba nbb nbi nbl nbn nbo nbs nia nib nii nil nin nio nis nla nlb nli nll nln nlo nls nna nnb nni nnl nnn nno nns no- noa nob noi nol non noo nos nsa nsb nsi nsl nsn nso nss o-i oaa oab oai oal oan oao oas ob- oba obb obi obl obn obo obs oia oib oii oil oin oio ois ola olb oli oll oln olo ols on- ona onb oni onl onn ono ons oo- ooa oob ooi ool oon ooo oos os- osa osb osi osl osn oso oss saa sab sai sal san sao sas sba sbb sbi sbl sbn sbo sbs sia sib sii sil sin sio sis sla slb sli sll sln slo sls sna snb sni snl snn sno sns soa sob soi sol son soo sos ss- ssa ssb ssi ssl ssn sso sss