b-u bbb bbf bbi bbn bbo bbt bbu bbx bfb bff bfi bfn bfo bft bfu bfx bi- bib bif bii bin bio bit biu bix bnb bnf bni bnn bno bnt bnu bnx bob bof boi bon boo bot bou box btb btf bti btn bto btt btu btx bub buf bui bun buo but buu bux bxb bxi bxn bxo bxx fbb fbf fbi fbn fbo fbt fbu fbx fff ffi ffn ffo fft ffu ffx fib fif fii fin fit fiu fix fnb fnf fni fnn fnt fnu fnx fob fof foi fon foo fot fou fox ftb ftf fti ftn fto ftt ftu ftx fub fuf fui fun fuo fut fuu fux fxi fxt fxu fxx i-f ibb ibf ibi ibn ibo ibt ibu ibx ifb iff ifi ifn ifo ift ifu ifx iib iif iii iin iio iit iiu iix in- inb inf ini inn ino int inu inx io- iob iof ioi ion ioo iot iou itb itf iti itn ito itt itu itx iu- iub iui iut ixi ixn n-i nbb nbf nbi nbn nbo nbt nbu nbx nfb nff nfi nfn nfo nft nfu nib nif nii nin nio nit niu nix nnb nnf nni nnn nno nnt nnu no- nob nof noi non noo not nou nox ntb ntf nti ntn nto ntt ntu ntx nub nui nun nuo nut nuu nux nxt o-i ob- obb obf obi obn obo obt obu obx of- ofb off ofi ofn ofo oft ofu ofx oib oif oii oin oio oit oiu on- onb onf oni onn ono ont onu onx oo- oob oof ooi oon ooo oot oox ot- otb otf oti otn oto ott otu ou- ouf oui oun ouo out ox- oxb oxf oxi oxn oxo oxt oxx t-x tbb tbf tbi tbn tbo tbt tbu tfb tff tfi tfn tfo tft tfu tfx tib tif tii tin tio tit tiu tix tnb tnf tni tnn tno tnt tnx to- tob tof toi ton too tot tou tox ttb ttf tti ttn tto ttt ttu ttx tub tuf tui tun tuo tut tuu tux txf txi txn txt txu ubb ubf ubi ubn ubo ubt ubu ubx uff ufi ufn ufo uft ufu ufx uib uif uii uin uio uit uiu un- unb unf uni unn uno unt unu unx uob uon uoo uot uox utb utf uti utn uto utt utu utx uun uut uuu uxb uxf uxo uxt uxu xbx xfn xft xfx xii xin xio xit xiu xix xno xnu xof xoi xon xoo xot xox xtf xti xtx xui xun xxi xxo xxx