fff ffo ffr fft ffx fof foo for fot fox frf fro frr frt ftf fto ftr ftt ftx fxr fxt fxx of- off ofo ofr oft ofx oo- oof ooo oor oot oox or- orf oro orr ort orx ot- otf oto otr ott ox- oxf oxo oxt oxx rff rfo rfr rft rof roo ror rot rox rrf rrr rrt rtf rto rtr rtt rtx rxr t-x tff tfo tfr tft tfx to- tof too tor tot tox trf tro trr trt trx ttf tto ttr ttt ttx txf txt xft xfx xof xoo xor xot xox xrf xrt xrx xtf xtr xtx xxo xxx

ffff ffrr fftf fofo foof foot for- foro forr fort foto fott foxx frot off- offo offr ofor ooff oooo oort orff oro- orof oror orot orro orto oto- otof otoo otor otro otto oxo- oxof oxox oxxo roff rofo roof roor root roox roro rort roto rotr rott roxo rrrr tfot tfox toff tofo toft toof toor toot torf toro torr tort torx toto totr tott tox- toxo toxt trfr troo trot trox trtr ttff tttt txtr xoro xoxo xtro xxxo xxxx

forro forto foxxx froot ftrtt offof offto ofoto ooooo orfor ortoo ototo ro-ro rofor rooft roto- rotor rotot rotox rotto toffo tofor torro torto toto- totoo toxo- troff troft trott ttttt xootr xorro xotox xoxox xtort

foofoo forrot oftfor oofotr oooooo ottoor rootof to-fro tootoo tororo torrox tortor totoro totrot trotro xoxoxo

foo-foo footrot forroot off-off ottrott ox-foot rootfor rootrot too-too tototoo tro-tro trotoff xxxxxxx

fox-trot foxtrott toottoot torotoro xoxoxoxo

footforfoot

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