-al a-a a-b a-t aaa aab aaf aag aal aas aat ab- aba abb abf abg abl abs abt af- afa afb aff afg afl afs aft ag- aga agb agf agg agl ags agt al- ala alb alf alg all als alt as- asa asb asf asg asl ass ast at- ata atb atf atg atl ats att baa bab baf bag bal bas bat bba bbb bbf bbg bbl bbs bbt bfa bfb bff bfg bfl bfs bft bga bgb bgf bgg bgl bgs bgt bla blb blf blg bll bls blt bsa bsb bsf bsg bsl bss bst bta btb btf btg btl bts btt faa fab faf fag fal fas fat fba fbb fbf fbg fbl fbs fbt ffa fff ffg ffl ffs fft fga fgb fgf fgg fgl fgs fgt fla flb flf flg fll fls flt fsa fsb fsf fsg fsl fss fst fta ftb ftf ftg ftl fts ftt gaa gab gaf gag gal gas gat gba gbf gbg gbl gbs gbt gfa gfb gff gfl gfs gft gga ggb ggg ggs ggt gla glb glf glg gll gls glt gsa gsb gsf gsg gsl gss gst gta gtb gtf gtg gtl gts gtt la- laa lab laf lag lal las lat lba lbb lbf lbg lbl lbs lbt lfa lfb lff lfg lfl lfs lft lga lgb lgf lgg lgl lgs lgt lla llb llf llg lll lls llt lsa lsb lsf lsg lsl lss lst lta ltb ltf ltg ltl lts ltt saa sab saf sag sal sas sat sba sbb sbf sbg sbl sbs sbt sfa sfb sff sfg sfl sfs sft sga sgb sgf sgg sgl sgs sgt sla slb slf slg sll sls slt ss- ssa ssb ssf ssg ssl sss sst sta stb stf stg stl sts stt taa tab taf tag tal tas tat tba tbb tbf tbg tbl tbs tbt tfa tfb tff tfg tfl tfs tft tga tgb tgf tgg tgl tgs tgt tla tlf tlg tll tls tlt tsa tsb tsf tsg tsl tss tst tta ttb ttf ttg ttl tts ttt