-er bbb bbe bbi bbm bbn bbo bbr bbs be- beb bee bei bem ben beo ber bes bi- bib bie bii bim bin bio bir bis bmb bme bmi bmm bmn bmo bmr bms bnb bne bni bnn bno bnr bns bob boe boi bom bon boo bor bos brb bre bri brm brn bro brr brs bsb bse bsi bsm bsn bso bsr bss ebb ebe ebi ebm ebn ebo ebr ebs eeb eee eem een eeo eer ees eib eie eii eim ein eio eir eis em- emb eme emi emm emn emo emr ems en- enb ene eni enm enn eno enr ens eo- eob eoe eoi eom eon eoo eor eos erb ere eri erm ern ero err ers es- esb ese esi esm esn eso esr ess ibb ibe ibi ibm ibn ibo ibr ibs ie- iee iei iem ien ier ies iib iie iii iim iin iio iir iis im- imb ime imi imm imn imo ims in- inb ine ini inm inn ino inr ins io- iob ioe ioi iom ion ioo ior ios ir- irb ire iri irm irn iro irr irs is- isb ise isi ism isn iso isr iss m-o m-r mbb mbe mbi mbm mbo mbr mbs meb mee mei mem men meo mer mes mi- mib mie mii mim min mio mir mis mmb mme mmi mmm mmn mmo mmr mms mnb mne mni mnm mnn mno mnr mns mob moe moi mom mon moo mor mos mrb mre mri mrm mrn mro mrr mrs msb mse msi msm msn mso msr mss n-i nbb nbe nbi nbm nbn nbo nbr nbs ne- neb nee nei nem nen neo ner nes nib nie nii nim nin nio nir nis nmb nme nmi nmm nmn nmo nmr nms nnb nne nni nnm nnn nno nns no- nob noe noi nom non noo nor nos nrb nre nri nrm nrn nro nrr nrs nsb nse nsi nsm nsn nso nsr nss o-i ob- obb obe obi obm obn obo obr obs oeb oee oei oem oen oeo oer oes oib oie oii oim oin oio oir ois om- omb ome omi omm omn omo omr oms on- onb one oni onn ono onr ons oo- oob ooi oom oon ooo oor oos or- orb ore ori orm orn oro orr ors os- osb ose osi osm osn oso osr oss rbb rbe rbi rbm rbn rbo rbr rbs re- reb ree rei rem ren reo rer res rib rie rii rim rin rio rir ris rmb rme rmi rmm rmn rmo rmr rms rnb rni rnm rnn rno rnr rns rob roe roi rom ron roo ror ros rrb rri rrm rrn rrr rrs rsb rse rsi rsm rsn rso rsr rss sbb sbe sbi sbm sbn sbo sbr sbs se- seb see sei sem sen seo ser ses sib sie sii sim sin sio sir sis smb sme smi smm smn smo smr sms snb sne sni snm snn sno snr sns sob soe soi som son soo sor sos sr- srb sre sri srm srn sro srr srs ss- ssb sse ssi ssm ssn sso ssr sss