-er bbb bbe bbg bbk bbm bbr be- beb bee beg bek bem ber bgb bge bgg bgk bgm bgr bkb bke bkg bkk bkm bkr bmb bme bmg bmk bmm bmr brb bre brg brk brm brr ebb ebe ebg ebk ebm ebr eeb eee eeg eek eem eer egb ege egg egm egr ekb eke ekg ekr em- emb eme emg emk emm emr erb ere erg erk erm err gbe gbg gbk gbm gbr ge- geb gee geg gek gem ger ggb ggg ggm ggr gkb gkm gmb gme gmg gmm gmr grb gre grg grk grm grr kbb kbe kbk kbm kbr ke- keb kee keg kek kem ker kgb kgm kkb kke kkk kkm kkr kmb kme kmg kmk kmm krg krk krr m-r mbb mbe mbg mbk mbm mbr meb mee meg mek mem mer mgb mge mgk mgm mgr mkb mke mkg mkk mkm mkr mmb mme mmg mmk mmm mmr mrb mre mrg mrk mrm mrr rbb rbe rbg rbk rbm rbr re- reb ree reg rek rem rer rgb rge rgg rgk rgr rkb rke rkg rkk rkm rmb rme rmg rmm rmr rrb rrg rrk rrm rrr