b-u bbb bbd bbe bbo bbt bbu bbx bdb bdd bde bdo bdt bdu bdx be- beb bed bee beo bet beu bex bob bod boe boo bot bou box btb btd bte bto btt btu btx bub bud bue buo but buu bux bxb bxd bxo bxx dbb dbd dbe dbo dbt dbu dbx ddb ddd dde ddo ddt ddu ddx de- deb ded dee deo det deu dex dob dod doe doo dot dou dox dtb dtd dte dto dtt dtu dtx dub dud due duo dut dux dxd dxo dxt dxx ebb ebd ebe ebo ebt ebu ebx ed- edb edd ede edo edt edu edx eeb eed eee eeo eet eex eo- eob eod eoe eoo eot eou etb etd ete eto ett etu etx eu- eub eud eue eut eux ex- exd exe exo ext exu exx ob- obb obd obe obo obt obu obx odb odd ode odo odt odu oeb oed oee oeo oet oex oo- oob ood ooo oot oox ot- otb otd ote oto ott otu ou- oud oue ouo out ox- oxb oxo oxt oxx t-x tbb tbd tbe tbo tbt tbu tdb tdd tde tdo tdt tdu tdx te- teb ted tee teo tet teu tex to- tob tod toe too tot tou tox ttb ttd tte tto ttt ttu ttx tub tud tue tuo tut tuu tux txe txt txu ubb ube ubo ubt ubu ubx udb udd ude udo udt udu udx ueb ued uee uet uob uod uoe uoo uot uox utb utd ute uto utt utu utx uue uut uuu uxb uxo uxt uxu xbe xbx xdb xde xdt xed xee xet xeu xex xod xoo xot xox xtx xue xxo xxx