-er bbb bbe bbg bbi bbl bbr be- beb bee beg bei bel ber bez bgb bge bgg bgi bgl bgr bgz bi- bib bie big bii bil bir biz blb ble blg bli bll blr blz brb bre brg bri brl brr brz bze bzr bzz ebb ebe ebg ebi ebl ebr eeb eee eeg eel eer egb ege egg egi egl egr eib eie eig eii eil eir elb ele elg eli ell elr elz erb ere erg eri erl err erz eze ezr ezz gbe gbg gbi gbl gbr gbz ge- geb gee geg gei gel ger gez ggb ggg ggi ggr ggz gib gie gig gii gil gir giz glb gle glg gli gll glr glz grb gre grg gri grl grr gzr ibb ibe ibg ibi ibl ibr ibz ie- iee ieg iei iel ier igb ige igg igi igl igr iib iie iii iil iir il- ilb ile ilg ili ill ilr ilz ir- irb ire irg iri irl irr ize izi izz lbb lbe lbg lbi lbl lbr leb lee leg lei lel ler lez lgb lge lgg lgi lgl lgr lib lie lig lii lil lir liz llb lle llg lli lll llr llz lrb lrg lri lrr lrz lzi lzr rbb rbe rbg rbi rbl rbr re- reb ree reg rei rel rer rez rgb rge rgg rgi rgr rib rie rig rii ril rir riz rle rlg rli rll rlr rrb rrg rri rrl rrr rzb rze z-g zbb zbl zbr zeb zee zel zer zez zgb zgg zgi zib zie zig zil zir ziz zlr zrl zzr zzz