-er bbb bbe bbi bbk bbl bbm bbn bbr be- beb bee bei bek bel bem ben ber bi- bib bie bii bik bil bim bin bir bkb bke bkk bkl bkm bkn bkr blb ble bli blk bll blm bln blr bmb bme bmi bmk bml bmm bmn bmr bnb bne bni bnk bnl bnn bnr brb bre bri brk brl brm brn brr ebb ebe ebi ebk ebl ebm ebn ebr eeb eee eek eel eem een eer eib eie eii eik eil eim ein eir ekb eke eki ekl ekr elb ele eli elk ell elm eln elr em- emb eme emi emk eml emm emn emr en- enb ene eni enk enl enm enn enr erb ere eri erk erl erm ern err ibb ibe ibi ibk ibl ibm ibn ibr ie- iee iei iek iel iem ien ier iib iie iii iil iim iin iir ikb ike iki ikk ikl ikr il- ilb ile ili ilk ill ilm iln ilr im- imb ime imi iml imm imn in- inb ine ini ink inl inm inn inr ir- irb ire iri irk irl irm irn irr kbb kbe kbi kbk kbl kbm kbn kbr ke- keb kee kei kek kel kem ken ker kib kie kii kik kil kim kin kir kkb kke kki kkk kkl kkm kkn kkr kl- klb kli klm klr kmb kme kmi kmk kml kmm kn- kne kni knk knl knm knn knr kri krk krl krn krr lbb lbe lbi lbk lbl lbm lbr leb lee lei lek lel lem len ler lib lie lii lik lil lim lin lir lkb lkl lkr llb lle lli llk lll llm lln llr lmb lme lmi lmk lml lmm lmn lmr lnb lne lni lnk lnl lnm lnn lnr lrb lri lrk lrm lrn lrr m-r mbb mbe mbi mbk mbl mbm mbr meb mee mei mek mel mem men mer mi- mib mie mii mik mil mim min mir mkb mke mkk mkl mkm mkn mkr mlb mle mli mlk mll mlm mln mlr mmb mme mmi mmk mml mmm mmn mmr mnb mne mni mnk mnl mnm mnn mnr mrb mre mri mrk mrl mrm mrn mrr n-i nbb nbe nbi nbk nbl nbm nbn nbr ne- neb nee nei nek nel nem nen ner nib nie nii nik nil nim nin nir nke nki nkk nkm nkn nkr nlb nle nli nlk nll nlm nln nlr nmb nme nmi nmk nml nmm nmn nmr nnb nne nni nnk nnl nnm nnn nrb nre nri nrk nrl nrm nrn nrr rbb rbe rbi rbk rbl rbm rbn rbr re- reb ree rei rek rel rem ren rer rib rie rii rik ril rim rin rir rkb rke rkk rkm rle rli rll rlm rln rlr rmb rme rmi rml rmm rmn rmr rnb rni rnm rnn rnr rrb rri rrk rrl rrm rrn rrr