bbb bbe bbg bbi bbl bbs be- beb bee beg bei bel bes bgb bge bgg bgi bgl bgs bi- bib bie big bii bil bis blb ble blg bli bll bls bsb bse bsg bsi bsl bss ebb ebe ebg ebi ebl ebs eeb eee eeg eel ees egb ege egg egi egl egs eib eie eig eii eil eis elb ele elg eli ell els es- esb ese esg esi esl ess gbe gbg gbi gbl gbs ge- geb gee geg gei gel ges ggb ggg ggi ggs gib gie gig gii gil gis glb gle glg gli gll gls gsb gse gsg gsi gsl gss ibb ibe ibg ibi ibl ibs ie- iee ieg iei iel ies igb ige igg igi igl igs iib iie iii iil iis il- ilb ile ilg ili ill ils is- isb ise isg isi isl iss lbb lbe lbg lbi lbl lbs leb lee leg lei lel les lgb lge lgg lgi lgl lgs lib lie lig lii lil lis llb lle llg lli lll lls lsb lse lsg lsi lsl lss sbb sbe sbg sbi sbl sbs se- seb see seg sei sel ses sgb sge sgg sgi sgl sgs sib sie sig sii sil sis slb sle slg sli sll sls ss- ssb sse ssg ssi ssl sss