-er bbb bbe bbm bbn bbr bbt be- beb bee bem ben ber bet bmb bme bmm bmn bmr bmt bnb bne bnn bnr bnt brb bre brm brn brr brt btb bte btm btn btr btt ebb ebe ebm ebn ebr ebt eeb eee eem een eer eet em- emb eme emm emn emr emt en- enb ene enm enn enr ent erb ere erm ern err ert etb ete etm etn etr ett m-r mbb mbe mbm mbr mbt meb mee mem men mer met mmb mme mmm mmn mmr mmt mnb mne mnm mnn mnr mnt mrb mre mrm mrn mrr mrt mtb mte mtm mtn mtr mtt nbb nbe nbm nbn nbr nbt ne- neb nee nem nen ner net nmb nme nmm nmn nmr nmt nnb nne nnm nnn nnt nrb nre nrm nrn nrr nrt ntb nte ntm ntn ntr ntt rbb rbe rbm rbn rbr rbt re- reb ree rem ren rer ret rmb rme rmm rmn rmr rmt rnb rnm rnn rnr rnt rrb rrm rrn rrr rrt rtb rte rtm rtn rtr rtt tbb tbe tbm tbn tbr tbt te- teb tee tem ten ter tet tmb tme tmm tmn tmr tmt tnb tne tnm tnn tnr tnt trb tre trm trn trr trt ttb tte ttm ttn ttr ttt