-al a-a a-b aaa aab aag aal aas ab- aba abb abg abl abs ag- aga agb agg agl ags al- ala alb alg all als as- asa asb asg asl ass baa bab bag bal bas bba bbb bbg bbl bbs bga bgb bgg bgl bgs bla blb blg bll bls bsa bsb bsg bsl bss gaa gab gag gal gas gba gbg gbl gbs gga ggb ggg ggs gla glb glg gll gls gsa gsb gsg gsl gss la- laa lab lag lal las lba lbb lbg lbl lbs lga lgb lgg lgl lgs lla llb llg lll lls lsa lsb lsg lsl lss saa sab sag sal sas sba sbb sbg sbl sbs sga sgb sgg sgl sgs sla slb slg sll sls ss- ssa ssb ssg ssl sss