fff ffo fft ffv ffx fof foo fot fox ftf fto ftt ftv ftx fvt fxt fxx of- off ofo oft ofv ofx oo- oof ooo oot oov oox ot- otf oto ott otv ov- ovf ovo ovv ox- oxf oxo oxt oxx t-x tff tfo tft tfx to- tof too tot tov tox ttf tto ttt ttv ttx tvf tvo tvt tvx txf txt vff vft vfv vof voo vot vov vox vto vtt vtv vtx vvo vvt vvv vxv xft xfv xfx xof xoo xot xov xox xtf xtv xtx xvt xxo xxv xxx

ffff fftf fofo foof foot foto fott foxx fxtv off- offo ooff oooo oto- otof otoo otov otto ovo- ovoo ovot oxo- oxof oxox oxxo tfot tfox toff tofo toft toof toot toto tott tovo tox- toxo toxt ttff tttt tvtv voff voot voto voxx vt-x vvvv xoxo xxxo xxxv xxxx

foxxx offof offto ofoto ooooo oovoo ototo ottov toffo toto- totoo toxo- ttttt votto xotox xoxox

foofoo oooooo tootoo txt-tv vvvvvv xoxoxo

foo-foo off-off ox-foot too-too tototoo xxxxxxx

toottoot xoxoxoxo

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