bbb bbc bbd bbm bbn bbo bcb bcc bcd bcm bcn bco bdb bdc bdd bdm bdo bmb bmc bmd bmm bmn bmo bnb bnc bnd bnn bno bob boc bod bom bon boo c-- cbb cbc cbd cbm cbn cbo ccb ccc ccd ccm ccn cco cdb cdc cdd cdm cdn cdo cmb cmc cmd cmm cmn cmo cn- cnb cnc cnd cnm cnn cno co- cob coc cod com con coo dbb dbc dbd dbm dbn dbo dcb dcc dcd dcm dcn dco ddb ddc ddd ddm ddn ddo dmb dmc dmd dmm dmn dmo dnb dnc dnd dnm dnn dno dob doc dod dom don doo m-o mbb mbc mbd mbm mbo mc- mcb mcc mcd mcm mcn mco mdb mdc mdd mdm mdn mdo mmb mmc mmd mmm mmn mmo mnb mnc mnm mnn mno mob moc mod mom mon moo nbb nbc nbd nbm nbn nbo ncb ncc ncd ncm ncn nco ndb ndc ndd ndm ndn ndo nmb nmc nmd nmm nmn nmo nnb nnc nnm nnn nno no- nob noc nod nom non noo ob- obb obc obd obm obn obo oc- ocb occ ocd ocm ocn oco odb odc odd odm odn odo om- omb omc omd omm omn omo on- onb onc ond onn ono oo- oob ooc ood oom oon ooo