-al a-a a-b aaa aab aae aag aal aas ab- aba abb abe abg abl abs aea aeb aee aeg ael aes ag- aga agb age agg agl ags al- ala alb ale alg all als as- asa asb ase asg asl ass baa bab bae bag bal bas bba bbb bbe bbg bbl bbs be- bea beb bee beg bel bes bga bgb bge bgg bgl bgs bla blb ble blg bll bls bsa bsb bse bsg bsl bss eaa eab eae eag eal eas eba ebb ebe ebg ebl ebs eea eeb eee eeg eel ees ega egb ege egg egl egs ela elb ele elg ell els es- esa esb ese esg esl ess gaa gab gae gag gal gas gba gbe gbg gbl gbs ge- gea geb gee geg gel ges gga ggb ggg ggs gla glb gle glg gll gls gsa gsb gse gsg gsl gss la- laa lab lae lag lal las lba lbb lbe lbg lbl lbs lea leb lee leg lel les lga lgb lge lgg lgl lgs lla llb lle llg lll lls lsa lsb lse lsg lsl lss saa sab sae sag sal sas sba sbb sbe sbg sbl sbs se- sea seb see seg sel ses sga sgb sge sgg sgl sgs sla slb sle slg sll sls ss- ssa ssb sse ssg ssl sss