bbb bbe bbg bbl bbs be- beb bee beg bel bes bgb bge bgg bgl bgs blb ble blg bll bls bsb bse bsg bsl bss ebb ebe ebg ebl ebs eeb eee eeg eel ees egb ege egg egl egs elb ele elg ell els es- esb ese esg esl ess gbe gbg gbl gbs ge- geb gee geg gel ges ggb ggg ggs glb gle glg gll gls gsb gse gsg gsl gss lbb lbe lbg lbl lbs leb lee leg lel les lgb lge lgg lgl lgs llb lle llg lll lls lsb lse lsg lsl lss sbb sbe sbg sbl sbs se- seb see seg sel ses sgb sge sgg sgl sgs slb sle slg sll sls ss- ssb sse ssg ssl sss