bbb bbd bbe bbm bbo bbx bdb bdd bde bdm bdo bdx be- beb bed bee bem beo bex bmb bmd bme bmm bmo bmx bob bod boe bom boo box bxb bxd bxm bxo bxx dbb dbd dbe dbm dbo dbx ddb ddd dde ddm ddo ddx de- deb ded dee dem deo dex dmb dmd dme dmm dmo dmx dob dod doe dom doo dox dxd dxo dxx ebb ebd ebe ebm ebo ebx ed- edb edd ede edm edo edx eeb eed eee eem eeo eex em- emb emd eme emm emo emx eo- eob eod eoe eom eoo ex- exd exe exo exx m-o mbb mbd mbe mbm mbo mbx mdb mdd mde mdm mdo mdx meb med mee mem meo mex mmb mmd mme mmm mmo mmx mob mod moe mom moo mox mxd ob- obb obd obe obm obo obx odb odd ode odm odo oeb oed oee oem oeo oex om- omb omd ome omm omo omx oo- oob ood oom ooo oox ox- oxb oxo oxx xbe xbx xdb xde xdm xed xee xem xex xmd xmm xmo xmx xod xom xoo xox xxo xxx