-ic c-- ccc cci cco ccr ccs cct ci- cic cii cio cir cis cit co- coc coi coo cor cos cot crc cri cro crr crs crt csc csi cso csr css cst ctc cti cto ctr cts ctt icc ici ico icr ics ict iic iii iio iir iis iit io- ioc ioi ioo ior ios iot ir- irc iri iro irr irs irt is- isc isi iso isr iss ist itc iti ito its itt o-i oc- occ oci oco ocr ocs oct oic oii oio oir ois oit oo- ooc ooi ooo oor oos oot or- orc ori oro orr ors ort os- osc osi oso osr oss ost ot- otc oti oto otr ots ott rcc rci rco rcr rcs rct ric rii rio rir ris rit roc roi roo ror ros rot rrc rri rrr rrs rrt rsc rsi rso rsr rss rst rtc rti rto rtr rts rtt scc sci sco scr scs sct sic sii sio sir sis sit soc soi soo sor sos sot sr- src sri sro srr srs srt ss- ssc ssi sso ssr sss sst stc sti sto str sts stt tcc tci tco tcr tcs tct tic tii tio tir tis tit to- toc toi too tor tos tot trc tri tro trr trs trt tsc tsi tso tsr tss tst ttc tti tto ttr tts ttt