bbb bbd bbe bbf bbg bbn bbo bdb bdd bde bdf bdg bdo be- beb bed bee bef beg ben beo bfb bfd bfe bff bfg bfn bfo bgb bgd bge bgf bgg bgn bgo bnb bnd bne bnf bng bnn bno bob bod boe bof bog bon boo dbb dbd dbe dbf dbg dbn dbo ddb ddd dde ddf ddg ddn ddo de- deb ded dee def deg den deo dfb dfd dfe dff dfg dfn dfo dgd dge dgf dgg dgn dnb dnd dne dnf dng dnn dno dob dod doe dof dog don doo ebb ebd ebe ebf ebg ebn ebo ed- edb edd ede edf edg edn edo eeb eed eee eef eeg een eeo ef- efb efd efe eff efg efo egb egd ege egf egg egn ego en- enb end ene enf eng enn eno eo- eob eod eoe eof eog eon eoo fbb fbd fbe fbf fbg fbn fbo fdb fdd fde fdf fdg fdn fdo feb fed fee fef feg fen feo ffd ffe fff ffg ffn ffo fgb fgd fge fgf fgg fgn fnb fnd fne fnf fng fnn fob foe fof fog fon foo g-d gbd gbe gbf gbg gbn gbo gdb gdd gde gdf gdn gdo ge- geb ged gee gef geg gen geo gfb gfd gfe gff gfo ggb ggd ggg ggn ggo gnb gnd gne gnf gnn gno gob god goe gof gog gon goo nbb nbd nbe nbf nbg nbn nbo ndb ndd nde ndf ndg ndn ndo ne- neb ned nee nef neg nen neo nfb nfd nfe nff nfn nfo ngb ngd nge ngf ngg ngn ngo nnb nne nnf nng nnn nno no- nob nod noe nof nog non noo ob- obb obd obe obf obg obn obo odb odd ode odf odg odn odo oeb oed oee oef oeg oen oeo of- ofb ofd ofe off ofg ofn ofo ogd oge ogf ogg ogn ogo on- onb ond one onf ong onn ono oo- oob ood oof oog oon ooo