bbb bbe bbk bbm bbn bbo be- beb bee bek bem ben beo bkb bke bkk bkm bkn bko bmb bme bmk bmm bmn bmo bnb bne bnk bnn bno bob boe bok bom bon boo ebb ebe ebk ebm ebn ebo eeb eee eek eem een eeo ekb eke eko em- emb eme emk emm emn emo en- enb ene enk enm enn eno eo- eob eoe eok eom eon eoo kbb kbe kbk kbm kbn kbo ke- keb kee kek kem ken keo kkb kke kkk kkm kkn kmb kme kmk kmm kmo kn- kne knk knm knn kno kob koe kok kom kon koo m-o mbb mbe mbk mbm mbo meb mee mek mem men meo mkb mke mkk mkm mkn mko mmb mme mmk mmm mmn mmo mnb mne mnk mnm mnn mno mob moe mok mom mon moo nbb nbe nbk nbm nbn nbo ne- neb nee nek nem nen neo nke nkk nkm nkn nko nmb nme nmk nmm nmn nmo nnb nne nnk nnm nnn nno no- nob noe nok nom non noo ob- obb obe obk obm obn obo oeb oee oem oen oeo okb oke okk oko om- omb ome omm omn omo on- onb one onk onn ono oo- oob ook oom oon ooo