b-u bbb bbd bbf bbg bbn bbo bbu bdb bdd bdf bdg bdo bdu bfb bfd bff bfg bfn bfo bfu bgb bgd bgf bgg bgn bgo bgu bnb bnd bnf bng bnn bno bnu bob bod bof bog bon boo bou bub bud buf bug bun buo buu dbb dbd dbf dbg dbn dbo dbu ddb ddd ddf ddg ddn ddo ddu dfb dfd dff dfg dfn dfo dfu dgd dgf dgg dgn dgu dnb dnd dnf dng dnn dno dob dod dof dog don doo dou dub dud duf dug dun duo fbb fbd fbf fbg fbn fbo fbu fdb fdd fdf fdg fdn fdo fdu ffd fff ffg ffn ffo ffu fgb fgd fgf fgg fgn fnb fnd fnf fng fnn fnu fob fof fog fon foo fou fub fud fuf fug fun fuo fuu g-d gbd gbf gbg gbn gbo gbu gdb gdd gdf gdn gdo gdu gfb gfd gff gfo ggb ggd ggg ggn ggo ggu gnb gnd gnf gnn gno gnu gob god gof gog gon goo gou gu- gub gud guf gug gun guo guu nbb nbd nbf nbg nbn nbo nbu ndb ndd ndf ndg ndn ndo ndu nfb nfd nff nfn nfo nfu ngb ngd ngf ngg ngn ngo ngu nnb nnf nng nnn nno nnu no- nob nod nof nog non noo nou nub nud nug nun nuo nuu ob- obb obd obf obg obn obo obu odb odd odf odg odn odo odu of- ofb ofd off ofg ofn ofo ofu ogd ogf ogg ogn ogo on- onb ond onf ong onn ono onu oo- oob ood oof oog oon ooo ou- oud ouf oun ouo ubb ubf ubg ubn ubo ubu udb udd udf udg udn udo udu ufd uff ufg ufn ufo ufu ugb ugf ugg ugn ugo ugu un- unb und unf ung unn uno unu uob uod uog uon uoo uug uun uuu