-ic c-- ccc cci ccp ccr ccs cct ci- cic cii cip ciq cir cis cit cpc cpi cpp cpq cpr cps cpt cqc cqi cqs cqt crc cri crp crq crr crs crt csc csi csp csq csr css cst ctc cti ctp ctq ctr cts ctt icc ici icp icq icr ics ict iic iii iip iir iis iit ipc ipi ipp ipr ips ipt iqc iqs iqt ir- irc iri irp irq irr irs irt is- isc isi isp isq isr iss ist itc iti itp itq its itt p-p pcc pci pcp pcq pcr pcs pct pic pii pip piq pir pis pit ppc ppi ppp ppq ppr pps ppt pqi pqq pqr pqs prc pri prp prq prr prs prt ps- psc psi psp psr pss pst pt- ptc pti ptp ptq ptr pts ptt qcc qci qcp qcs qct qic qip qir qis qit qpc qpp qpr qps qqq qrc qri qrp qrs qrt qsc qsi qsp qsr qst qtc qti qtq qtr qts rcc rci rcp rcr rcs rct ric rii rip riq rir ris rit rpc rpi rpp rpr rps rpt rqc rqs rrc rri rrp rrq rrr rrs rrt rsc rsi rsp rsq rsr rss rst rtc rti rtp rtq rtr rts rtt scc sci scp scr scs sct sic sii sip siq sir sis sit spc spi spp spq spr sps spt sqi sqq sqr sqs sr- src sri srp srq srr srs srt ss- ssc ssi ssp ssq ssr sss sst stc sti stp stq str sts stt tcc tci tcp tcr tcs tct tic tii tip tir tis tit tpc tpi tpp tpq tpr tps tpt trc tri trp trq trr trs trt tsc tsi tsp tsq tsr tss tst ttc tti ttp ttr tts ttt