bbb bbe bbm bbn bbo be- beb bee bem ben beo bmb bme bmm bmn bmo bnb bne bnn bno bob boe bom bon boo ebb ebe ebm ebn ebo eeb eee eem een eeo em- emb eme emm emn emo en- enb ene enm enn eno eo- eob eoe eom eon eoo m-o mbb mbe mbm mbo meb mee mem men meo mmb mme mmm mmn mmo mnb mne mnm mnn mno mob moe mom mon moo nbb nbe nbm nbn nbo ne- neb nee nem nen neo nmb nme nmm nmn nmo nnb nne nnm nnn nno no- nob noe nom non noo ob- obb obe obm obn obo oeb oee oem oen oeo om- omb ome omm omn omo on- onb one onn ono oo- oob oom oon ooo