-ic c-- ccc cci cco ccp ccr cct ci- cic cii cio cip cir cit co- coc coi coo cop cor cot cpc cpi cpo cpp cpr cpt crc cri cro crp crr crt ctc cti cto ctp ctr ctt icc ici ico icp icr ict iic iii iio iip iir iit io- ioc ioi ioo iop ior iot ipc ipi ipo ipp ipr ipt ir- irc iri iro irp irr irt itc iti ito itp itt o-i oc- occ oci oco ocp ocr oct oic oii oio oip oir oit oo- ooc ooi ooo oop oor oot op- opc opi opo opp opr opt or- orc ori oro orp orr ort ot- otc oti oto otp otr ott p-p pcc pci pco pcp pcr pct pic pii pio pip pir pit poc poi poo pop por pot ppc ppi ppo ppp ppr ppt prc pri pro prp prr prt pt- ptc pti pto ptp ptr ptt rcc rci rco rcp rcr rct ric rii rio rip rir rit roc roi roo rop ror rot rpc rpi rpo rpp rpr rpt rrc rri rrp rrr rrt rtc rti rto rtp rtr rtt tcc tci tco tcp tcr tct tic tii tio tip tir tit to- toc toi too top tor tot tpc tpi tpo tpp tpr tpt trc tri tro trp trr trt ttc tti tto ttp ttr ttt