-er bbb bbe bbg bbi bbm bbr be- beb bee beg bei bem ber bez bgb bge bgg bgi bgm bgr bgz bi- bib bie big bii bim bir biz bmb bme bmg bmi bmm bmr bmz brb bre brg bri brm brr brz bze bzr bzz ebb ebe ebg ebi ebm ebr eeb eee eeg eem eer egb ege egg egi egm egr eib eie eig eii eim eir em- emb eme emg emi emm emr erb ere erg eri erm err erz eze ezr ezz gbe gbg gbi gbm gbr gbz ge- geb gee geg gei gem ger gez ggb ggg ggi ggm ggr ggz gib gie gig gii gim gir giz gmb gme gmg gmi gmm gmr gmz grb gre grg gri grm grr gzr ibb ibe ibg ibi ibm ibr ibz ie- iee ieg iei iem ier igb ige igg igi igm igr iib iie iii iim iir im- imb ime img imi imm imz ir- irb ire irg iri irm irr ize izi izm izz m-r mbb mbe mbg mbi mbm mbr meb mee meg mei mem mer mez mgb mge mgi mgm mgr mgz mi- mib mie mig mii mim mir miz mmb mme mmg mmi mmm mmr mmz mrb mre mrg mri mrm mrr mrz mzb mzi mzm rbb rbe rbg rbi rbm rbr re- reb ree reg rei rem rer rez rgb rge rgg rgi rgr rib rie rig rii rim rir riz rmb rme rmg rmi rmm rmr rrb rrg rri rrm rrr rzb rze rzm z-g zbb zbm zbr zeb zee zem zer zez zgb zgg zgi zib zie zig zim zir ziz zmb zmm zzr zzz