-er bbb bbe bbm bbn bbo bbr bbt be- beb bee bem ben beo ber bet bez bmb bme bmm bmn bmo bmr bmt bmz bnb bne bnn bno bnr bnt bnz bob boe bom bon boo bor bot boz brb bre brm brn bro brr brt brz btb bte btm btn bto btr btt btz bze bzn bzo bzr bzz ebb ebe ebm ebn ebo ebr ebt eeb eee eem een eeo eer eet em- emb eme emm emn emo emr emt en- enb ene enm enn eno enr ent enz eo- eob eoe eom eon eoo eor eot erb ere erm ern ero err ert erz etb ete etm etn eto etr ett etz eze ezo ezr ezz m-o m-r mbb mbe mbm mbo mbr mbt meb mee mem men meo mer met mez mmb mme mmm mmn mmo mmr mmt mmz mnb mne mnm mnn mno mnr mnt mnz mob moe mom mon moo mor mot moz mrb mre mrm mrn mro mrr mrt mrz mtb mte mtm mtn mto mtr mtt mzb mzm mzn mzt nbb nbe nbm nbn nbo nbr nbt ne- neb nee nem nen neo ner net nez nmb nme nmm nmn nmo nmr nmt nmz nnb nne nnm nnn nno nnt nnz no- nob noe nom non noo nor not noz nrb nre nrm nrn nro nrr nrt nrz ntb nte ntm ntn nto ntr ntt ntz nzb nze nzo nzz ob- obb obe obm obn obo obr obt oeb oee oem oen oeo oer oet om- omb ome omm omn omo omr omt omz on- onb one onn ono onr ont oo- oob oom oon ooo oor oot or- orb ore orm orn oro orr ort orz ot- otb ote otm otn oto otr ott otz oze ozm ozo ozt ozz rbb rbe rbm rbn rbo rbr rbt re- reb ree rem ren reo rer ret rez rmb rme rmm rmn rmo rmr rmt rnb rnm rnn rno rnr rnt rnz rob roe rom ron roo ror rot roz rrb rrm rrn rrr rrt rtb rte rtm rtn rto rtr rtt rtz rzb rze rzm rzo tbb tbe tbm tbn tbo tbr tbt tbz te- teb tee tem ten teo ter tet tez tmb tme tmm tmn tmo tmr tmt tmz tnb tne tnm tnn tno tnr tnt tnz to- tob toe tom ton too tor tot toz trb tre trm trn tro trr trt trz ttb tte ttm ttn tto ttr ttt tze zbb zbm zbr zbt zeb zee zem zen zeo zer zet zez zmb zmm zmt zne znn zno zo- zob zoe zom zon zoo zor zot zro zte ztm ztr zzr zzt zzz