-ic c-- ccc cci ccp ccr ccs cct ci- cic cii cip cir cis cit cpc cpi cpp cpr cps cpt crc cri crp crr crs crt cry csc csi csp csr css cst csy ctc cti ctp ctr cts ctt cty cyc cyp cyr cys cyt icc ici icp icr ics ict icy iic iii iip iir iis iit ipc ipi ipp ipr ips ipt ipy ir- irc iri irp irr irs irt iry is- isc isi isp isr iss ist isy itc iti itp its itt ity iyc iyr iys iyt iyy p-p pcc pci pcp pcr pcs pct pic pii pip pir pis pit ppc ppi ppp ppr pps ppt prc pri prp prr prs prt pry ps- psc psi psp psr pss pst psy pt- ptc pti ptp ptr pts ptt pty py- pyc pyr pys pyt rcc rci rcp rcr rcs rct ric rii rip rir ris rit riy rpc rpi rpp rpr rps rpt rrc rri rrp rrr rrs rrt rsc rsi rsp rsr rss rst rtc rti rtp rtr rts rtt rty ry- ryc ryr rys ryy scc sci scp scr scs sct sic sii sip sir sis sit spc spi spp spr sps spt spy sr- src sri srp srr srs srt sry ss- ssc ssi ssp ssr sss sst stc sti stp str sts stt sty sy- syc syi syp syr sys syt tcc tci tcp tcr tcs tct tic tii tip tir tis tit tiy tpc tpi tpp tpr tps tpt trc tri trp trr trs trt try tsc tsi tsp tsr tss tst tsy ttc tti ttp ttr tts ttt tty tyc typ tyr tys tyt ycc yci ycp ycs ycy yii yip yir yis yit yps yrc yrp yrs yrt ysc ysi ysp ysr yss yst ysy ytc ytp ytr yts ytt yyc yys yyt yyy