-al a-a a-b aaa aab aae aaf aal aam aas ab- aba abb abe abf abl abm abs aea aeb aee aef ael aem aes af- afa afb afe aff afl afm afs al- ala alb ale alf all alm als ama amb ame amf aml amm ams as- asa asb ase asf asl asm ass baa bab bae baf bal bam bas bba bbb bbe bbf bbl bbm bbs be- bea beb bee bef bel bem bes bfa bfb bfe bff bfl bfm bfs bla blb ble blf bll blm bls bma bmb bme bmf bml bmm bms bsa bsb bse bsf bsl bsm bss eaa eab eae eaf eal eam eas eba ebb ebe ebf ebl ebm ebs eea eeb eee eef eel eem ees ef- efa efb efe eff efl efm efs ela elb ele elf ell elm els em- ema emb eme emf eml emm ems es- esa esb ese esf esl esm ess faa fab fae faf fal fam fas fba fbb fbe fbf fbl fbm fbs fea feb fee fef fel fem fes ffa ffe fff ffl ffm ffs fla flb fle flf fll flm fls fma fmb fme fmf fml fmm fms fsa fsb fse fsf fsl fsm fss la- laa lab lae laf lal lam las lba lbb lbe lbf lbl lbm lbs lea leb lee lef lel lem les lfa lfb lfe lff lfl lfm lfs lla llb lle llf lll llm lls lma lmb lme lmf lml lmm lms lsa lsb lse lsf lsl lsm lss m-f maa mab mae maf mal mam mas mba mbb mbe mbf mbl mbm mbs mea meb mee mef mel mem mes mfa mfb mfe mff mfl mfm mfs mla mlb mle mlf mll mlm mls mma mmb mme mmf mml mmm mms msa msb mse msf msl msm mss saa sab sae saf sal sam sas sba sbb sbe sbf sbl sbm sbs se- sea seb see sef sel sem ses sfa sfb sfe sff sfl sfm sfs sla slb sle slf sll slm sls sma smb sme smf sml smm sms ss- ssa ssb sse ssf ssl ssm sss