cccc cccs ccrc ccrs ccrt ccss ccst cctc cctt crcc crcr crrt crss crst crtc crts cry- crys cscc cscr cscs csrc csrs cssr cstc cstr csts csys ctrc ctrs ctsc ctss ctts cyc- cycc cycs cyrs cyrt cyst cyt- cyy- cyyc rccc rccs rcsc rcss rctc rcts rcyc rrrr rscc rscs rscy rsts rtcc rtss rtts rysy rytt ryyt sccc sccs scct sccy scr- scrc scrs scry scsc scsr scst sctc sctr scts srcc srct srtr sscc sscs ssrc ssrs sssc ssss sstc ssts stcc stcs strc strs stry stss sttc sttr styr stys sycr syrs syrt syry syss syst sytt tccc tctc tcts trcc trst trtc trtr try- trys tscc tssr tsst tstc tsts tsys ttss tttt ttys tyr- tyrr tyss tyst tytt tyty yccc yctc yyyy