c-- ccc ccf cco ccr cct ccw cfc cff cfo cfr cft cfw co- coc cof coo cor cot cow crc crf cro crr crt crw ctc ctf cto ctr ctt ctw cw- cwc cwo cwr cwt fcc fcf fco fcr fct fcw ffc fff ffo ffr fft ffw foc fof foo for fot fow frc frf fro frr frt frw ftc ftf fto ftr ftt ftw fwc fwf fwo fwt oc- occ ocf oco ocr oct ocw of- ofc off ofo ofr oft ofw oo- ooc oof ooo oor oot oow or- orc orf oro orr ort ot- otc otf oto otr ott otw owc owf owo owt oww rcc rcf rco rcr rct rcw rfc rff rfo rfr rft rfw roc rof roo ror rot row rrc rrf rrr rrt rtc rtf rto rtr rtt rtw rwc rwf rwr tcc tcf tco tcr tct tcw tfc tff tfo tfr tft tfw to- toc tof too tor tot tow trc trf tro trr trt trw ttc ttf tto ttr ttt ttw twc twf two twr twt tww wcc wcf wco wcr wct wcw wfc wff wfo wfr wft wfw woc wof woo wor wot wow wr- wrc wrf wro wrr wrt wrw wtc wtf wto wtr wtt wtw wwc wwf wwo wwt www