c-- ccc cco ccp ccr cct ccv co- coc coo cop cor cot cov cpc cpo cpp cpr cpt cpv crc cro crp crr crt crv ctc cto ctp ctr ctt ctv cvc cvo cvp cvr cvt cvv oc- occ oco ocp ocr oct ocv oo- ooc ooo oop oor oot oov op- opc opo opp opr opt opv or- orc oro orp orr ort orv ot- otc oto otp otr ott otv ov- ovc ovo ovp ovv p-p pcc pco pcp pcr pct pcv poc poo pop por pot pov ppc ppo ppp ppr ppt ppv prc pro prp prr prt prv pt- ptc pto ptp ptr ptt ptv pvc pvo pvp pvr pvt pvv rcc rco rcp rcr rct rcv roc roo rop ror rot rov rpc rpo rpp rpr rpt rpv rrc rrp rrr rrt rtc rto rtp rtr rtt rtv rvc rvo rvp rvr rvt rvv tcc tco tcp tcr tct tcv to- toc too top tor tot tov tpc tpo tpp tpr tpt tpv trc tro trp trr trt trv ttc tto ttp ttr ttt ttv tvc tvo tvp tvr tvt vcc vco vcp vcr vct voc voo vop vor vot vov vpc vpo vpp vpr vpt vrc vrp vrr vrt vtc vto vtr vtt vtv vvc vvo vvr vvt vvv