bbb bbd bbe bbm bbo bbs bdb bdd bde bdm bdo bds be- beb bed bee bem beo bes bmb bmd bme bmm bmo bms bob bod boe bom boo bos bsb bsd bse bsm bso bss dbb dbd dbe dbm dbo dbs ddb ddd dde ddm ddo dds de- deb ded dee dem deo des dmb dmd dme dmm dmo dms dob dod doe dom doo dos dsb dsd dse dsm dso dss ebb ebd ebe ebm ebo ebs ed- edb edd ede edm edo eds eeb eed eee eem eeo ees em- emb emd eme emm emo ems eo- eob eod eoe eom eoo eos es- esb esd ese esm eso ess m-o mbb mbd mbe mbm mbo mbs mdb mdd mde mdm mdo mds meb med mee mem meo mes mmb mmd mme mmm mmo mms mob mod moe mom moo mos msb msd mse msm mso mss ob- obb obd obe obm obo obs odb odd ode odm odo ods oeb oed oee oem oeo oes om- omb omd ome omm omo oms oo- oob ood oom ooo oos os- osb osd ose osm oso oss sbb sbd sbe sbm sbo sbs sdb sdd sde sdm sdo sds se- seb sed see sem seo ses smb smd sme smm smo sms sob sod soe som soo sos ss- ssb ssd sse ssm sso sss