-er b-u bbb bbe bbi bbl bbn bbr bbu be- beb bee bei bel ben ber beu bez bi- bib bie bii bil bin bir biu biz blb ble bli bll bln blr blu blz bnb bne bni bnl bnn bnr bnu bnz brb bre bri brl brn brr bru brz bub bue bui bul bun bur buu buz bze bzn bzr bzu bzz ebb ebe ebi ebl ebn ebr ebu eeb eee eel een eer eib eie eii eil ein eir eiu elb ele eli ell eln elr elu elz en- enb ene eni enl enn enr enu enz erb ere eri erl ern err eru erz eu- eub eue eui eul eun eur eze ezr ezz ibb ibe ibi ibl ibn ibr ibu ibz ie- iee iei iel ien ier iib iie iii iil iin iir iiu il- ilb ile ili ill iln ilr ilu ilz in- inb ine ini inl inn inr inu ir- irb ire iri irl irn irr iru iu- iub iue iui iur iuz ize izi izu izz lbb lbe lbi lbl lbr lbu leb lee lei lel len ler leu lez lib lie lii lil lin lir liu liz llb lle lli lll lln llr llu llz lnb lne lni lnl lnn lnr lnu lrb lri lrn lrr lru lrz lub lue lui lul lun lur luu luz lzi lzr lzu n-i nbb nbe nbi nbl nbn nbr nbu ne- neb nee nei nel nen ner neu nez nib nie nii nil nin nir niu niz nlb nle nli nll nln nlr nlu nlz nnb nne nni nnl nnn nnu nnz nrb nre nri nrl nrn nrr nru nrz nub nue nui nul nun nur nuu nzb nze nzi nzz rbb rbe rbi rbl rbn rbr rbu re- reb ree rei rel ren rer reu rez rib rie rii ril rin rir riz rle rli rll rln rlr rlu rnb rni rnn rnr rnu rnz rrb rri rrl rrn rrr rru rub rue rui run rur ruu ruz rzb rze ubb ube ubi ubl ubn ubr ubu ueb uee uei uel uen uer uib uie uii uil uin uir uiu ulb ule uli ull uln ulr ulu un- unb une uni unl unn unr unu ur- urb ure uri url urn urr uru urz uue uun uur uuu uzb uzi uzu zbb zbl zbr zeb zee zel zen zer zez zib zie zil zin zir ziz zlr zne znn zrl zub zui zul zun zur zuz zzr zzz