b-u bbb bbd bbe bbn bbo bbu bbx bdb bdd bde bdo bdu bdx be- beb bed bee ben beo beu bex bnb bnd bne bnn bno bnu bnx bob bod boe bon boo bou box bub bud bue bun buo buu bux bxb bxd bxn bxo bxx dbb dbd dbe dbn dbo dbu dbx ddb ddd dde ddn ddo ddu ddx de- deb ded dee den deo deu dex dnb dnd dne dnn dno dob dod doe don doo dou dox dub dud due dun duo dux dxd dxn dxo dxx ebb ebd ebe ebn ebo ebu ebx ed- edb edd ede edn edo edu edx eeb eed eee een eeo eex en- enb end ene enn eno enu eo- eob eod eoe eon eoo eou eu- eub eud eue eun eux ex- exd exe exo exu exx nbb nbd nbe nbn nbo nbu nbx ndb ndd nde ndn ndo ndu ne- neb ned nee nen neo neu nex nnb nne nnn nno nnu no- nob nod noe non noo nou nox nub nud nue nun nuo nuu nux nxd ob- obb obd obe obn obo obu obx odb odd ode odn odo odu oeb oed oee oen oeo oex on- onb ond one onn ono onu onx oo- oob ood oon ooo oox ou- oud oue oun ouo ox- oxb oxn oxo oxx ubb ube ubn ubo ubu ubx udb udd ude udn udo udu udx ueb ued uee uen un- unb und une unn uno unu unx uob uod uoe uon uoo uox uue uun uuu uxb uxo uxu xbe xbx xdb xde xed xee xen xeu xex xno xnu xod xon xoo xox xue xun xxo xxx