-er b-u bbb bbe bbg bbi bbn bbr bbu be- beb bee beg bei ben ber beu bez bgb bge bgg bgi bgn bgr bgu bgz bi- bib bie big bii bin bir biu biz bnb bne bng bni bnn bnr bnu bnz brb bre brg bri brn brr bru brz bub bue bug bui bun bur buu buz bze bzn bzr bzu bzz ebb ebe ebg ebi ebn ebr ebu eeb eee eeg een eer egb ege egg egi egn egr egu eib eie eig eii ein eir eiu en- enb ene eng eni enn enr enu enz erb ere erg eri ern err eru erz eu- eub eue eug eui eun eur eze ezr ezz gbe gbg gbi gbn gbr gbu gbz ge- geb gee geg gei gen ger geu gez ggb ggg ggi ggn ggr ggu ggz gib gie gig gii gin gir giu giz gnb gne gni gnn gnr gnu grb gre grg gri grn grr gru gu- gub gue gug gui gun gur guu guz gzr gzu ibb ibe ibg ibi ibn ibr ibu ibz ie- iee ieg iei ien ier igb ige igg igi ign igr igu iib iie iii iin iir iiu in- inb ine ing ini inn inr inu ir- irb ire irg iri irn irr iru iu- iub iue iug iui iur iuz ize izi izu izz n-i nbb nbe nbg nbi nbn nbr nbu ne- neb nee neg nei nen ner neu nez ngb nge ngg ngi ngn ngu nib nie nig nii nin nir niu niz nnb nne nng nni nnn nnu nnz nrb nre nrg nri nrn nrr nru nrz nub nue nug nui nun nur nuu nzb nze nzg nzi nzz rbb rbe rbg rbi rbn rbr rbu re- reb ree reg rei ren rer reu rez rgb rge rgg rgi rgn rgr rib rie rig rii rin rir riz rnb rng rni rnn rnr rnu rnz rrb rrg rri rrn rrr rru rub rue rug rui run rur ruu ruz rzb rze ubb ube ubg ubi ubn ubr ubu ueb uee ueg uei uen uer ugb uge ugg ugi ugn ugr ugu uib uie uig uii uin uir uiu un- unb une ung uni unn unr unu ur- urb ure urg uri urn urr uru urz uue uug uun uur uuu uzb uzi uzu z-g zbb zbr zeb zee zen zer zez zgb zgg zgi zib zie zig zin zir ziz zne znn zub zug zui zun zur zuz zzr zzz