-er b-u bbb bbe bbg bbi bbn bbr bbt bbu be- beb bee beg bei ben ber bet beu bez bgb bge bgg bgi bgn bgr bgt bgu bgz bi- bib bie big bii bin bir bit biu biz bnb bne bng bni bnn bnr bnt bnu bnz brb bre brg bri brn brr brt bru brz btb bte btg bti btn btr btt btu btz bub bue bug bui bun bur but buu buz bze bzn bzr bzu bzz ebb ebe ebg ebi ebn ebr ebt ebu eeb eee eeg een eer eet egb ege egg egi egn egr egt egu eib eie eig eii ein eir eit eiu en- enb ene eng eni enn enr ent enu enz erb ere erg eri ern err ert eru erz etb ete etg eti etn etr ett etu etz eu- eub eue eug eui eun eur eut eze ezr ezz gbe gbg gbi gbn gbr gbt gbu gbz ge- geb gee geg gei gen ger get geu gez ggb ggg ggi ggn ggr ggt ggu ggz gib gie gig gii gin gir git giu giz gnb gne gni gnn gnr gnt gnu grb gre grg gri grn grr grt gru gtb gte gtg gti gtn gtr gtt gtu gu- gub gue gug gui gun gur gut guu guz gzr gzu ibb ibe ibg ibi ibn ibr ibt ibu ibz ie- iee ieg iei ien ier iet igb ige igg igi ign igr igt igu iib iie iii iin iir iit iiu in- inb ine ing ini inn inr int inu ir- irb ire irg iri irn irr irt iru itb ite itg iti itn itt itu itz iu- iub iue iug iui iur iut iuz ize izi izu izz n-i nbb nbe nbg nbi nbn nbr nbt nbu ne- neb nee neg nei nen ner net neu nez ngb nge ngg ngi ngn ngt ngu nib nie nig nii nin nir nit niu niz nnb nne nng nni nnn nnt nnu nnz nrb nre nrg nri nrn nrr nrt nru nrz ntb nte ntg nti ntn ntr ntt ntu ntz nub nue nug nui nun nur nut nuu nzb nze nzg nzi nzz rbb rbe rbg rbi rbn rbr rbt rbu re- reb ree reg rei ren rer ret reu rez rgb rge rgg rgi rgn rgr rgt rib rie rig rii rin rir rit riz rnb rng rni rnn rnr rnt rnu rnz rrb rrg rri rrn rrr rrt rru rtb rte rtg rti rtn rtr rtt rtu rtz rub rue rug rui run rur rut ruu ruz rzb rze tbb tbe tbg tbi tbn tbr tbt tbu tbz te- teb tee teg tei ten ter tet teu tez tgb tge tgg tgi tgn tgr tgt tgu tgz tib tie tig tii tin tir tit tiu tiz tnb tne tng tni tnn tnr tnt tnz trb tre trg tri trn trr trt tru trz ttb tte ttg tti ttn ttr ttt ttu tub tue tug tui tun tur tut tuu tuz tze tzu ubb ube ubg ubi ubn ubr ubt ubu ueb uee ueg uei uen uer uet ugb uge ugg ugi ugn ugr ugt ugu uib uie uig uii uin uir uit uiu un- unb une ung uni unn unr unt unu ur- urb ure urg uri urn urr urt uru urz utb ute uti utn utr utt utu utz uue uug uun uur uut uuu uzb uzi uzu z-g zbb zbr zbt zeb zee zen zer zet zez zgb zgg zgi zib zie zig zin zir zit ziz zne znn zte ztr zub zug zui zun zur zut zuz zzr zzt zzz