-ic c-- ccc cci ccp ccr ccs cct ccx ci- cic cii cip cir cis cit cix cpc cpi cpp cpr cps cpt cpx crc cri crp crr crs crt crx csc csi csp csr css cst csx ctc cti ctp ctr cts ctt ctx cxc cxi cxp cxr cxs cxt cxx icc ici icp icr ics ict iic iii iip iir iis iit iix ipc ipi ipp ipr ips ipt ipx ir- irc iri irp irr irs irt irx is- isc isi isp isr iss ist itc iti itp its itt itx ixc ixi p-p pcc pci pcp pcr pcs pct pcx pic pii pip pir pis pit pix ppc ppi ppp ppr pps ppt ppx prc pri prp prr prs prt prx ps- psc psi psp psr pss pst psx pt- ptc pti ptp ptr pts ptt ptx pxc pxr pxs pxt rcc rci rcp rcr rcs rct rcx ric rii rip rir ris rit rix rpc rpi rpp rpr rps rpt rpx rrc rri rrp rrr rrs rrt rsc rsi rsp rsr rss rst rsx rtc rti rtp rtr rts rtt rtx rxp rxr rxs scc sci scp scr scs sct scx sic sii sip sir sis sit six spc spi spp spr sps spt spx sr- src sri srp srr srs srt srx ss- ssc ssi ssp ssr sss sst ssx stc sti stp str sts stt stx sxc sxi sxs sxt t-x tcc tci tcp tcr tcs tct tcx tic tii tip tir tis tit tix tpc tpi tpp tpr tps tpt tpx trc tri trp trr trs trt trx tsc tsi tsp tsr tss tst tsx ttc tti ttp ttr tts ttt ttx txi txs txt xci xcp xcr xcx xic xii xis xit xix xpc xpp xps xpt xrc xrt xrx xsc xsi xsp xss xst xtc xti xtp xtr xts xtx xxi xxp xxx