-er bbb bbe bbm bbn bbr bbs bbt be- beb bee bem ben ber bes bet bmb bme bmm bmn bmr bms bmt bnb bne bnn bnr bns bnt brb bre brm brn brr brs brt bsb bse bsm bsn bsr bss bst btb bte btm btn btr bts btt ebb ebe ebm ebn ebr ebs ebt eeb eee eem een eer ees eet em- emb eme emm emn emr ems emt en- enb ene enm enn enr ens ent erb ere erm ern err ers ert es- esb ese esm esn esr ess est etb ete etm etn etr ets ett m-r mbb mbe mbm mbr mbs mbt meb mee mem men mer mes met mmb mme mmm mmn mmr mms mmt mnb mne mnm mnn mnr mns mnt mrb mre mrm mrn mrr mrs mrt msb mse msm msn msr mss mst mtb mte mtm mtn mtr mts mtt nbb nbe nbm nbn nbr nbs nbt ne- neb nee nem nen ner nes net nmb nme nmm nmn nmr nms nmt nnb nne nnm nnn nns nnt nrb nre nrm nrn nrr nrs nrt nsb nse nsm nsn nsr nss nst ntb nte ntm ntn ntr nts ntt rbb rbe rbm rbn rbr rbs rbt re- reb ree rem ren rer res ret rmb rme rmm rmn rmr rms rmt rnb rnm rnn rnr rns rnt rrb rrm rrn rrr rrs rrt rsb rse rsm rsn rsr rss rst rtb rte rtm rtn rtr rts rtt sbb sbe sbm sbn sbr sbs sbt se- seb see sem sen ser ses set smb sme smm smn smr sms smt snb sne snm snn snr sns snt sr- srb sre srm srn srr srs srt ss- ssb sse ssm ssn ssr sss sst stb ste stm stn str sts stt tbb tbe tbm tbn tbr tbs tbt te- teb tee tem ten ter tes tet tmb tme tmm tmn tmr tms tmt tnb tne tnm tnn tnr tns tnt trb tre trm trn trr trs trt tsb tse tsm tsn tsr tss tst ttb tte ttm ttn ttr tts ttt