-er bbb bbe bbg bbn bbr bbt be- beb bee beg ben ber bet bez bgb bge bgg bgn bgr bgt bgz bnb bne bng bnn bnr bnt bnz brb bre brg brn brr brt brz btb bte btg btn btr btt btz bze bzn bzr bzz ebb ebe ebg ebn ebr ebt eeb eee eeg een eer eet egb ege egg egn egr egt en- enb ene eng enn enr ent enz erb ere erg ern err ert erz etb ete etg etn etr ett etz eze ezr ezz gbe gbg gbn gbr gbt gbz ge- geb gee geg gen ger get gez ggb ggg ggn ggr ggt ggz gnb gne gnn gnr gnt grb gre grg grn grr grt gtb gte gtg gtn gtr gtt gzr nbb nbe nbg nbn nbr nbt ne- neb nee neg nen ner net nez ngb nge ngg ngn ngt nnb nne nng nnn nnt nnz nrb nre nrg nrn nrr nrt nrz ntb nte ntg ntn ntr ntt ntz nzb nze nzg nzz rbb rbe rbg rbn rbr rbt re- reb ree reg ren rer ret rez rgb rge rgg rgn rgr rgt rnb rng rnn rnr rnt rnz rrb rrg rrn rrr rrt rtb rte rtg rtn rtr rtt rtz rzb rze tbb tbe tbg tbn tbr tbt tbz te- teb tee teg ten ter tet tez tgb tge tgg tgn tgr tgt tgz tnb tne tng tnn tnr tnt tnz trb tre trg trn trr trt trz ttb tte ttg ttn ttr ttt tze z-g zbb zbr zbt zeb zee zen zer zet zez zgb zgg zne znn zte ztr zzr zzt zzz