-al a-a a-b aaa aab aal aan aas ab- aba abb abl abn abs al- ala alb all aln als an- ana anb anl ann ans as- asa asb asl asn ass baa bab bal ban bas bba bbb bbl bbn bbs bla blb bll bln bls bna bnb bnl bnn bns bsa bsb bsl bsn bss la- laa lab lal lan las lba lbb lbl lbs lla llb lll lln lls lna lnb lnl lnn lns lsa lsb lsl lsn lss naa nab nal nan nas nba nbb nbl nbn nbs nla nlb nll nln nls nna nnb nnl nnn nns nsa nsb nsl nsn nss saa sab sal san sas sba sbb sbl sbn sbs sla slb sll sln sls sna snb snl snn sns ss- ssa ssb ssl ssn sss