-ic c-- ccc cci cco ccr cct ci- cic cii cio cir cit co- coc coi coo cor cot crc cri cro crr crt ctc cti cto ctr ctt icc ici ico icr ict iic iii iio iir iit io- ioc ioi ioo ior iot ir- irc iri iro irr irt itc iti ito itt o-i oc- occ oci oco ocr oct oic oii oio oir oit oo- ooc ooi ooo oor oot or- orc ori oro orr ort ot- otc oti oto otr ott rcc rci rco rcr rct ric rii rio rir rit roc roi roo ror rot rrc rri rrr rrt rtc rti rto rtr rtt tcc tci tco tcr tct tic tii tio tir tit to- toc toi too tor tot trc tri tro trr trt ttc tti tto ttr ttt