-al a-a a-b a-t aaa aab aal aam aas aat ab- aba abb abl abm abs abt al- ala alb all alm als alt ama amb aml amm ams amt as- asa asb asl asm ass ast at- ata atb atl atm ats att baa bab bal bam bas bat bba bbb bbl bbm bbs bbt bla blb bll blm bls blt bma bmb bml bmm bms bmt bsa bsb bsl bsm bss bst bta btb btl btm bts btt la- laa lab lal lam las lat lba lbb lbl lbm lbs lbt lla llb lll llm lls llt lma lmb lml lmm lms lmt lsa lsb lsl lsm lss lst lta ltb ltl ltm lts ltt maa mab mal mam mas mat mba mbb mbl mbm mbs mbt mla mlb mll mlm mls mlt mma mmb mml mmm mms mmt msa msb msl msm mss mst mta mtb mtl mtm mts mtt saa sab sal sam sas sat sba sbb sbl sbm sbs sbt sla slb sll slm sls slt sma smb sml smm sms smt ss- ssa ssb ssl ssm sss sst sta stb stl stm sts stt taa tab tal tam tas tat tba tbb tbl tbm tbs tbt tla tll tlm tls tlt tma tmb tml tmm tms tmt tsa tsb tsl tsm tss tst tta ttb ttl ttm tts ttt