b-p bbb bbd bbm bbo bbp bdb bdd bdm bdo bdp bmb bmd bmm bmo bmp bob bod bom boo bop bpb bpd bpm bpo bpp dbb dbd dbm dbo dbp ddb ddd ddm ddo ddp dmb dmd dmm dmo dmp dob dod dom doo dop dpb dpd dpm dpo dpp m-o mbb mbd mbm mbo mbp mdb mdd mdm mdo mdp mmb mmd mmm mmo mmp mob mod mom moo mop mpb mpd mpm mpo mpp ob- obb obd obm obo obp odb odd odm odo odp om- omb omd omm omo omp oo- oob ood oom ooo oop op- opb opd opm opo opp p-p pbb pbd pbm pbo pbp pdb pdd pdm pdo pdp pmb pmd pmm pmo pmp pob pod pom poo pop ppb ppd ppm ppo ppp