-er bbb bbe bbf bbi bbm bbo bbr bbs be- beb bee bef bei bem beo ber bes bfb bfe bff bfi bfm bfo bfr bfs bi- bib bie bif bii bim bio bir bis bmb bme bmf bmi bmm bmo bmr bms bob boe bof boi bom boo bor bos brb bre brf bri brm bro brr brs bsb bse bsf bsi bsm bso bsr bss ebb ebe ebf ebi ebm ebo ebr ebs eeb eee eef eem eeo eer ees ef- efb efe eff efi efm efo efr efs eib eie eif eii eim eio eir eis em- emb eme emf emi emm emo emr ems eo- eob eoe eof eoi eom eoo eor eos erb ere erf eri erm ero err ers es- esb ese esf esi esm eso esr ess fbb fbe fbf fbi fbm fbo fbr fbs feb fee fef fei fem feo fer fes ffe fff ffi ffm ffo ffr ffs fib fie fif fii fim fir fis fmb fme fmf fmi fmm fmo fmr fms fob foe fof foi fom foo for fos frb fre frf fri frm fro frr frs fsb fse fsf fsi fsm fso fsr fss i-f ibb ibe ibf ibi ibm ibo ibr ibs ie- iee ief iei iem ier ies ifb ife iff ifi ifm ifo ifr ifs iib iie iif iii iim iio iir iis im- imb ime imf imi imm imo ims io- iob ioe iof ioi iom ioo ior ios ir- irb ire irf iri irm iro irr irs is- isb ise isf isi ism iso isr iss m-f m-o m-r mbb mbe mbf mbi mbm mbo mbr mbs meb mee mef mei mem meo mer mes mfb mfe mff mfi mfm mfo mfr mfs mi- mib mie mif mii mim mio mir mis mmb mme mmf mmi mmm mmo mmr mms mob moe mof moi mom moo mor mos mrb mre mrf mri mrm mro mrr mrs msb mse msf msi msm mso msr mss o-i ob- obb obe obf obi obm obo obr obs oeb oee oef oei oem oeo oer oes of- ofb ofe off ofi ofm ofo ofr ofs oib oie oif oii oim oio oir ois om- omb ome omf omi omm omo omr oms oo- oob oof ooi oom ooo oor oos or- orb ore orf ori orm oro orr ors os- osb ose osf osi osm oso osr oss rbb rbe rbf rbi rbm rbo rbr rbs re- reb ree ref rei rem reo rer res rfb rfe rff rfi rfm rfo rfr rfs rib rie rif rii rim rio rir ris rmb rme rmf rmi rmm rmo rmr rms rob roe rof roi rom roo ror ros rrb rrf rri rrm rrr rrs rsb rse rsf rsi rsm rso rsr rss sbb sbe sbf sbi sbm sbo sbr sbs se- seb see sef sei sem seo ser ses sfb sfe sff sfi sfm sfo sfr sfs sib sie sif sii sim sio sir sis smb sme smf smi smm smo smr sms sob soe sof soi som soo sor sos sr- srb sre srf sri srm sro srr srs ss- ssb sse ssf ssi ssm sso ssr sss