-al -ol a-a a-b a-t aaa aab aal aan aao aas aat ab- aba abb abl abn abo abs abt al- ala alb all aln alo als alt an- ana anb anl ann ano ans ant aoa aob aol aon aoo aos aot as- asa asb asl asn aso ass ast at- ata atb atl atn ato ats att baa bab bal ban bao bas bat bba bbb bbl bbn bbo bbs bbt bla blb bll bln blo bls blt bna bnb bnl bnn bno bns bnt boa bob bol bon boo bos bot bsa bsb bsl bsn bso bss bst bta btb btl btn bto bts btt la- laa lab lal lan lao las lat lba lbb lbl lbo lbs lbt lla llb lll lln llo lls llt lna lnb lnl lnn lno lns lnt loa lob lol lon loo los lot lsa lsb lsl lsn lso lss lst lta ltb ltl lto lts ltt naa nab nal nan nao nas nat nba nbb nbl nbn nbo nbs nbt nla nlb nll nln nlo nls nlt nna nnb nnl nnn nno nns nnt no- noa nob nol non noo nos not nsa nsb nsl nsn nso nss nst nta ntb ntn nto nts ntt oaa oab oal oan oao oas oat ob- oba obb obl obn obo obs obt ola olb oll oln olo ols olt on- ona onb onl onn ono ons ont oo- ooa oob ool oon ooo oos oot os- osa osb osl osn oso oss ost ot- ota otb otl otn oto ots ott saa sab sal san sao sas sat sba sbb sbl sbn sbo sbs sbt sla slb sll sln slo sls slt sna snb snl snn sno sns snt soa sob sol son soo sos sot ss- ssa ssb ssl ssn sso sss sst sta stb stl stn sto sts stt taa tab tal tan tao tas tat tba tbb tbl tbn tbo tbs tbt tla tll tln tlo tls tlt tna tnb tnl tnn tno tns tnt to- toa tob tol ton too tos tot tsa tsb tsl tsn tso tss tst tta ttb ttl ttn tto tts ttt