bbb bbd bbe bbn bbo bbs bbx bdb bdd bde bdo bds bdx be- beb bed bee ben beo bes bex bnb bnd bne bnn bno bns bnx bob bod boe bon boo bos box bsb bsd bse bsn bso bss bsx bxb bxd bxn bxo bxx dbb dbd dbe dbn dbo dbs dbx ddb ddd dde ddn ddo dds ddx de- deb ded dee den deo des dex dnb dnd dne dnn dno dns dob dod doe don doo dos dox dsb dsd dse dsn dso dss dsx dxd dxn dxo dxs dxx ebb ebd ebe ebn ebo ebs ebx ed- edb edd ede edn edo eds edx eeb eed eee een eeo ees eex en- enb end ene enn eno ens eo- eob eod eoe eon eoo eos es- esb esd ese esn eso ess esx ex- exd exe exo exs exx nbb nbd nbe nbn nbo nbs nbx ndb ndd nde ndn ndo nds ne- neb ned nee nen neo nes nex nnb nne nnn nno nns no- nob nod noe non noo nos nox nsb nsd nse nsn nso nss nsx nxd ob- obb obd obe obn obo obs obx odb odd ode odn odo ods oeb oed oee oen oeo oes oex on- onb ond one onn ono ons onx oo- oob ood oon ooo oos oox os- osb osd ose osn oso oss osx ox- oxb oxn oxo oxx sbb sbd sbe sbn sbo sbs sbx sdb sdd sde sdn sdo sds se- seb sed see sen seo ses sex snb snd sne snn sno sns sob sod soe son soo sos sox ss- ssb ssd sse ssn sso sss ssx sxn sxs xbe xbx xdb xde xds xed xee xen xes xex xno xns xod xon xoo xos xox xsb xss xxo xxx