-er bbb bbe bbg bbi bbr bbt be- beb bee beg bei ber bet bez bgb bge bgg bgi bgr bgt bgz bi- bib bie big bii bir bit biz brb bre brg bri brr brt brz btb bte btg bti btr btt btz bze bzr bzz ebb ebe ebg ebi ebr ebt eeb eee eeg eer eet egb ege egg egi egr egt eib eie eig eii eir eit erb ere erg eri err ert erz etb ete etg eti etr ett etz eze ezr ezz gbe gbg gbi gbr gbt gbz ge- geb gee geg gei ger get gez ggb ggg ggi ggr ggt ggz gib gie gig gii gir git giz grb gre grg gri grr grt gtb gte gtg gti gtr gtt gzr ibb ibe ibg ibi ibr ibt ibz ie- iee ieg iei ier iet igb ige igg igi igr igt iib iie iii iir iit ir- irb ire irg iri irr irt itb ite itg iti itt itz ize izi izz rbb rbe rbg rbi rbr rbt re- reb ree reg rei rer ret rez rgb rge rgg rgi rgr rgt rib rie rig rii rir rit riz rrb rrg rri rrr rrt rtb rte rtg rti rtr rtt rtz rzb rze tbb tbe tbg tbi tbr tbt tbz te- teb tee teg tei ter tet tez tgb tge tgg tgi tgr tgt tgz tib tie tig tii tir tit tiz trb tre trg tri trr trt trz ttb tte ttg tti ttr ttt tze z-g zbb zbr zbt zeb zee zer zet zez zgb zgg zgi zib zie zig zir zit ziz zte ztr zzr zzt zzz