-ic c-- ccc cce cci ccp ccs cct ccx ce- cec cee cei cep ces cet cex ci- cic cie cii cip cis cit cix cpc cpe cpi cpp cps cpt cpx csc cse csi csp css cst csx ctc cte cti ctp cts ctt ctx cxc cxi cxp cxs cxt cxx ec- ecc ece eci ecs ect ecx eec eee eep ees eet eex eic eie eii eip eis eit eix ep- epc epe epi epp eps ept epx es- esc ese esi esp ess est esx etc ete eti etp ets ett etx ex- exc exe exi exp exs ext exx icc ice ici icp ics ict ie- iec iee iei iep ies iet iex iic iie iii iip iis iit iix ipc ipe ipi ipp ips ipt ipx is- isc ise isi isp iss ist itc ite iti itp its itt itx ixc ixe ixi p-p pcc pce pci pcp pcs pct pcx pec pee pei pep pes pet pex pic pie pii pip pis pit pix ppc ppe ppi ppp pps ppt ppx ps- psc pse psi psp pss pst psx pt- ptc pte pti ptp pts ptt ptx pxc pxe pxs pxt scc sce sci scp scs sct scx se- sec see sei sep ses set sex sic sie sii sip sis sit six spc spe spi spp sps spt spx ss- ssc sse ssi ssp sss sst ssx stc ste sti stp sts stt stx sxc sxi sxs sxt t-x tcc tce tci tcp tcs tct tcx te- tec tee tei tep tes tet tex tic tie tii tip tis tit tix tpc tpe tpi tpp tps tpt tpx tsc tse tsi tsp tss tst tsx ttc tte tti ttp tts ttt ttx txe txi txs txt xci xcp xcx xee xep xes xet xex xic xie xii xis xit xix xpc xpe xpp xps xpt xsc xsi xsp xss xst xtc xti xtp xts xtx xxi xxp xxx