cccc cccs cccv ccrc ccrs ccrt ccss ccst cctc cctt cctv ccvs crcc crcr crrt crss crst crtc crts crtv cscc cscr cscs csrc csrs cssr cstc cstr csts ctrc ctrs ctsc ctss ctts ctvt cvcc cvrr cvss rccc rccs rcsc rcss rctc rcts rctv rcvr rcvs rrrr rscc rscs rsts rtcc rtss rtts rv-c s-vt sccc sccs scct scr- scrc scrs scsc scsr scst sctc sctr scts sctv srcc srct srtr srtv sscc sscs ssrc ssrs sssc ssss sstc ssts st-v stcc stcs strc strs stss sttc sttr stvs svcc svcs svsc svtr tccc tctc tcts trcc trst trtc trtr trvs tscc tssr tsst tstc tsts ttss tttt tvrr tvss tvtv vcrs vssc vtrs vvvv