b-u bbb bbd bbg bbo bbt bbu bdb bdd bdg bdo bdt bdu bgb bgd bgg bgo bgt bgu bob bod bog boo bot bou btb btd btg bto btt btu bub bud bug buo but buu dbb dbd dbg dbo dbt dbu ddb ddd ddg ddo ddt ddu dgd dgg dgt dgu dob dod dog doo dot dou dtb dtd dtg dto dtt dtu dub dud dug duo dut g-d gbd gbg gbo gbt gbu gdb gdd gdo gdt gdu ggb ggd ggg ggo ggt ggu gob god gog goo got gou gtb gtd gtg gto gtt gtu gu- gub gud gug guo gut guu ob- obb obd obg obo obt obu odb odd odg odo odt odu ogd ogg ogo ogt oo- oob ood oog ooo oot ot- otb otd otg oto ott otu ou- oud ouo out tbb tbd tbg tbo tbt tbu tdb tdd tdg tdo tdt tdu tgb tgg tgo tgt tgu to- tob tod tog too tot tou ttb ttd ttg tto ttt ttu tub tud tug tuo tut tuu ubb ubg ubo ubt ubu udb udd udg udo udt udu ugb ugg ugo ugt ugu uob uod uog uoo uot utb utd uto utt utu uug uut uuu