-er bbb bbe bbi bbm bbn bbr bbs be- beb bee bei bem ben ber bes bi- bib bie bii bim bin bir bis bmb bme bmi bmm bmn bmr bms bnb bne bni bnn bnr bns brb bre bri brm brn brr brs bsb bse bsi bsm bsn bsr bss ebb ebe ebi ebm ebn ebr ebs eeb eee eem een eer ees eib eie eii eim ein eir eis em- emb eme emi emm emn emr ems en- enb ene eni enm enn enr ens erb ere eri erm ern err ers es- esb ese esi esm esn esr ess ibb ibe ibi ibm ibn ibr ibs ie- iee iei iem ien ier ies iib iie iii iim iin iir iis im- imb ime imi imm imn ims in- inb ine ini inm inn inr ins ir- irb ire iri irm irn irr irs is- isb ise isi ism isn isr iss m-r mbb mbe mbi mbm mbr mbs meb mee mei mem men mer mes mi- mib mie mii mim min mir mis mmb mme mmi mmm mmn mmr mms mnb mne mni mnm mnn mnr mns mrb mre mri mrm mrn mrr mrs msb mse msi msm msn msr mss n-i nbb nbe nbi nbm nbn nbr nbs ne- neb nee nei nem nen ner nes nib nie nii nim nin nir nis nmb nme nmi nmm nmn nmr nms nnb nne nni nnm nnn nns nrb nre nri nrm nrn nrr nrs nsb nse nsi nsm nsn nsr nss rbb rbe rbi rbm rbn rbr rbs re- reb ree rei rem ren rer res rib rie rii rim rin rir ris rmb rme rmi rmm rmn rmr rms rnb rni rnm rnn rnr rns rrb rri rrm rrn rrr rrs rsb rse rsi rsm rsn rsr rss sbb sbe sbi sbm sbn sbr sbs se- seb see sei sem sen ser ses sib sie sii sim sin sir sis smb sme smi smm smn smr sms snb sne sni snm snn snr sns sr- srb sre sri srm srn srr srs ss- ssb sse ssi ssm ssn ssr sss