-al -ol a-a a-b aaa aab aak aal aam aao aas ab- aba abb abk abl abm abo abs aka akb akk akl akm ako aks al- ala alb alk all alm alo als ama amb amk aml amm amo ams aoa aob aok aol aom aoo aos as- asa asb ask asl asm aso ass baa bab bak bal bam bao bas bba bbb bbk bbl bbm bbo bbs bka bkb bkk bkl bkm bko bks bla blb blk bll blm blo bls bma bmb bmk bml bmm bmo bms boa bob bok bol bom boo bos bsa bsb bsk bsl bsm bso bss ka- kaa kab kak kal kam kao kas kba kbb kbk kbl kbm kbo kbs kkb kkk kkl kkm kks kl- kla klb klm klo kls kma kmb kmk kml kmm kmo kms koa kob kok kol kom koo kos ksa ksb ksk ksl ksm kso kss la- laa lab lak lal lam lao las lba lbb lbk lbl lbm lbo lbs lka lkb lkl lks lla llb llk lll llm llo lls lma lmb lmk lml lmm lmo lms loa lob lok lol lom loo los lsa lsb lsk lsl lsm lso lss m-o maa mab mak mal mam mao mas mba mbb mbk mbl mbm mbo mbs mka mkb mkk mkl mkm mko mks mla mlb mlk mll mlm mlo mls mma mmb mmk mml mmm mmo mms moa mob mok mol mom moo mos msa msb msk msl msm mso mss oaa oab oak oal oam oao oas ob- oba obb obk obl obm obo obs oka okb okk okl oko oks ola olb olk oll olm olo ols om- oma omb oml omm omo oms oo- ooa oob ook ool oom ooo oos os- osa osb osk osl osm oso oss saa sab sak sal sam sao sas sba sbb sbk sbl sbm sbo sbs sk- ska skb skk skl skm sko sks sla slb slk sll slm slo sls sma smb smk sml smm smo sms soa sob sok sol som soo sos ss- ssa ssb ssk ssl ssm sso sss