bbb bbe bbf bbn bbo bbt be- beb bee bef ben beo bet bfb bfe bff bfn bfo bft bnb bne bnf bnn bno bnt bob boe bof bon boo bot btb bte btf btn bto btt ebb ebe ebf ebn ebo ebt eeb eee eef een eeo eet ef- efb efe eff efo eft en- enb ene enf enn eno ent eo- eob eoe eof eon eoo eot etb ete etf etn eto ett fbb fbe fbf fbn fbo fbt feb fee fef fen feo fet ffe fff ffn ffo fft fnb fne fnf fnn fnt fob foe fof fon foo fot ftb fte ftf ftn fto ftt nbb nbe nbf nbn nbo nbt ne- neb nee nef nen neo net nfb nfe nff nfn nfo nft nnb nne nnf nnn nno nnt no- nob noe nof non noo not ntb nte ntf ntn nto ntt ob- obb obe obf obn obo obt oeb oee oef oen oeo oet of- ofb ofe off ofn ofo oft on- onb one onf onn ono ont oo- oob oof oon ooo oot ot- otb ote otf otn oto ott tbb tbe tbf tbn tbo tbt te- teb tee tef ten teo tet tfb tfe tff tfn tfo tft tnb tne tnf tnn tno tnt to- tob toe tof ton too tot ttb tte ttf ttn tto ttt