b-u bbb bbd bbe bbn bbo bbt bbu bdb bdd bde bdo bdt bdu be- beb bed bee ben beo bet beu bnb bnd bne bnn bno bnt bnu bob bod boe bon boo bot bou btb btd bte btn bto btt btu bub bud bue bun buo but buu dbb dbd dbe dbn dbo dbt dbu ddb ddd dde ddn ddo ddt ddu de- deb ded dee den deo det deu dnb dnd dne dnn dno dnt dob dod doe don doo dot dou dtb dtd dte dtn dto dtt dtu dub dud due dun duo dut ebb ebd ebe ebn ebo ebt ebu ed- edb edd ede edn edo edt edu eeb eed eee een eeo eet en- enb end ene enn eno ent enu eo- eob eod eoe eon eoo eot eou etb etd ete etn eto ett etu eu- eub eud eue eun eut nbb nbd nbe nbn nbo nbt nbu ndb ndd nde ndn ndo ndt ndu ne- neb ned nee nen neo net neu nnb nne nnn nno nnt nnu no- nob nod noe non noo not nou ntb ntd nte ntn nto ntt ntu nub nud nue nun nuo nut nuu ob- obb obd obe obn obo obt obu odb odd ode odn odo odt odu oeb oed oee oen oeo oet on- onb ond one onn ono ont onu oo- oob ood oon ooo oot ot- otb otd ote otn oto ott otu ou- oud oue oun ouo out tbb tbd tbe tbn tbo tbt tbu tdb tdd tde tdn tdo tdt tdu te- teb ted tee ten teo tet teu tnb tnd tne tnn tno tnt to- tob tod toe ton too tot tou ttb ttd tte ttn tto ttt ttu tub tud tue tun tuo tut tuu ubb ube ubn ubo ubt ubu udb udd ude udn udo udt udu ueb ued uee uen uet un- unb und une unn uno unt unu uob uod uoe uon uoo uot utb utd ute utn uto utt utu uue uun uut uuu