bbb bbd bbe bbk bbm bbo bdb bdd bde bdk bdm bdo be- beb bed bee bek bem beo bkb bke bkk bkm bko bmb bmd bme bmk bmm bmo bob bod boe bok bom boo dbb dbd dbe dbk dbm dbo ddb ddd dde ddk ddm ddo de- deb ded dee dek dem deo dkb dke dkk dkm dko dmb dmd dme dmk dmm dmo dob dod doe dok dom doo ebb ebd ebe ebk ebm ebo ed- edb edd ede edk edm edo eeb eed eee eek eem eeo ekb ekd eke eko em- emb emd eme emk emm emo eo- eob eod eoe eok eom eoo kbb kbd kbe kbk kbm kbo kdb kde kdk kdm kdo ke- keb ked kee kek kem keo kkb kke kkk kkm kmb kmd kme kmk kmm kmo kob kod koe kok kom koo m-o mbb mbd mbe mbk mbm mbo mdb mdd mde mdk mdm mdo meb med mee mek mem meo mkb mkd mke mkk mkm mko mmb mmd mme mmk mmm mmo mob mod moe mok mom moo ob- obb obd obe obk obm obo odb odd ode odm odo oeb oed oee oem oeo okb okd oke okk oko om- omb omd ome omm omo oo- oob ood ook oom ooo