-er bbb bbe bbg bbm bbn bbo bbr bbs be- beb bee beg bem ben beo ber bes bgb bge bgg bgm bgn bgo bgr bgs bmb bme bmg bmm bmn bmo bmr bms bnb bne bng bnn bno bnr bns bob boe bog bom bon boo bor bos brb bre brg brm brn bro brr brs bsb bse bsg bsm bsn bso bsr bss ebb ebe ebg ebm ebn ebo ebr ebs eeb eee eeg eem een eeo eer ees egb ege egg egm egn ego egr egs em- emb eme emg emm emn emo emr ems en- enb ene eng enm enn eno enr ens eo- eob eoe eog eom eon eoo eor eos erb ere erg erm ern ero err ers es- esb ese esg esm esn eso esr ess gbe gbg gbm gbn gbo gbr gbs ge- geb gee geg gem gen geo ger ges ggb ggg ggm ggn ggo ggr ggs gmb gme gmg gmm gmn gmo gmr gms gnb gne gnm gnn gno gnr gns gob goe gog gom gon goo gor gos grb gre grg grm grn gro grr grs gsb gse gsg gsm gsn gso gsr gss m-o m-r mbb mbe mbg mbm mbo mbr mbs meb mee meg mem men meo mer mes mgb mge mgm mgn mgo mgr mgs mmb mme mmg mmm mmn mmo mmr mms mnb mne mng mnm mnn mno mnr mns mob moe mog mom mon moo mor mos mrb mre mrg mrm mrn mro mrr mrs msb mse msg msm msn mso msr mss nbb nbe nbg nbm nbn nbo nbr nbs ne- neb nee neg nem nen neo ner nes ngb nge ngg ngm ngn ngo ngs nmb nme nmg nmm nmn nmo nmr nms nnb nne nng nnm nnn nno nns no- nob noe nog nom non noo nor nos nrb nre nrg nrm nrn nro nrr nrs nsb nse nsg nsm nsn nso nsr nss ob- obb obe obg obm obn obo obr obs oeb oee oeg oem oen oeo oer oes oge ogg ogn ogo ogs om- omb ome omg omm omn omo omr oms on- onb one ong onn ono onr ons oo- oob oog oom oon ooo oor oos or- orb ore org orm orn oro orr ors os- osb ose osg osm osn oso osr oss rbb rbe rbg rbm rbn rbo rbr rbs re- reb ree reg rem ren reo rer res rgb rge rgg rgn rgo rgr rgs rmb rme rmg rmm rmn rmo rmr rms rnb rng rnm rnn rno rnr rns rob roe rog rom ron roo ror ros rrb rrg rrm rrn rrr rrs rsb rse rsg rsm rsn rso rsr rss sbb sbe sbg sbm sbn sbo sbr sbs se- seb see seg sem sen seo ser ses sgb sge sgg sgm sgn sgo sgr sgs smb sme smg smm smn smo smr sms snb sne sng snm snn sno snr sns sob soe sog som son soo sor sos sr- srb sre srg srm srn sro srr srs ss- ssb sse ssg ssm ssn sso ssr sss