-er b-u bbb bbd bbe bbi bbk bbl bbn bbr bbu bdb bdd bde bdi bdk bdl bdr bdu be- beb bed bee bei bek bel ben ber beu bi- bib bid bie bii bik bil bin bir biu bkb bke bkk bkl bkn bkr blb bld ble bli blk bll bln blr blu bnb bnd bne bni bnk bnl bnn bnr bnu brb brd bre bri brk brl brn brr bru bub bud bue bui buk bul bun bur buu dbb dbd dbe dbi dbk dbl dbn dbr dbu ddb ddd dde ddi ddk ddl ddn ddr ddu de- deb ded dee dei dek del den der deu di- dib did die dii dik dil din dir diu dkb dke dki dkk dkl dkr dku dl- dlb dld dle dli dlk dll dlr dlu dnb dnd dne dni dnk dnl dnn dnr drb drd dre dri drk drl drn drr dru dub dud due dui duk dul dun dur ebb ebd ebe ebi ebk ebl ebn ebr ebu ed- edb edd ede edi edk edl edn edr edu eeb eed eee eek eel een eer eib eid eie eii eik eil ein eir eiu ekb ekd eke eki ekl ekr eku elb eld ele eli elk ell eln elr elu en- enb end ene eni enk enl enn enr enu erb erd ere eri erk erl ern err eru eu- eub eud eue eui eul eun eur i-d ibb ibd ibe ibi ibk ibl ibn ibr ibu idb idd ide idi idk idl idn idr idu ie- ied iee iei iek iel ien ier iib iid iie iii iil iin iir iiu ikb ike iki ikk ikl ikr iku il- ilb ild ile ili ilk ill iln ilr ilu in- inb ind ine ini ink inl inn inr inu ir- irb ird ire iri irk irl irn irr iru iu- iub iud iue iui iur kbb kbd kbe kbi kbk kbl kbn kbr kbu kdb kde kdk kdl kdr kdu ke- keb ked kee kei kek kel ken ker kib kid kie kii kik kil kin kir kiu kkb kke kki kkk kkl kkn kkr kku kl- klb kld kli klr klu kn- knd kne kni knk knl knn knr knu krd kri krk krl krn krr kru kub kud kue kui kuk kul kun kur kuu lbb lbd lbe lbi lbk lbl lbr lbu ldb ldd lde ldi ldk ldl ldn ldr ldu leb led lee lei lek lel len ler leu lib lid lie lii lik lil lin lir liu lkb lkl lkr llb lld lle lli llk lll lln llr llu lnb lnd lne lni lnk lnl lnn lnr lnu lrb lrd lri lrk lrn lrr lru lub lud lue lui luk lul lun lur luu n-i nbb nbd nbe nbi nbk nbl nbn nbr nbu ndb ndd nde ndi ndk ndl ndn ndr ndu ne- neb ned nee nei nek nel nen ner neu nib nid nie nii nik nil nin nir niu nke nki nkk nkn nkr nku nlb nld nle nli nlk nll nln nlr nlu nnb nne nni nnk nnl nnn nnu nrb nrd nre nri nrk nrl nrn nrr nru nub nud nue nui nuk nul nun nur nuu rbb rbd rbe rbi rbk rbl rbn rbr rbu rdb rdd rde rdi rdl rdn rdr rdu re- reb red ree rei rek rel ren rer reu rib rid rie rii rik ril rin rir rkb rke rkk rku rld rle rli rll rln rlr rlu rnb rnd rni rnn rnr rnu rrb rrd rri rrk rrl rrn rrr rru rub rud rue rui ruk run rur ruu ubb ube ubi ubk ubl ubn ubr ubu udb udd ude udi udk udl udn udr udu ueb ued uee uei uel uen uer uib uid uie uii uil uin uir uiu ukb uke uki ukk ukl ukn ukr uku ulb uld ule uli ulk ull uln ulr ulu un- unb und une uni unk unl unn unr unu ur- urb urd ure uri urk url urn urr uru uue uun uur uuu