cccc cccs cccv ccnc ccns ccsn ccss ccst cctc cctt cctv ccvs cnss cntc cscc cscs cstc csts ctns ctsc ctsn ctss cttn ctts ctvt cvcc cvss n-tv nccc nccn nccs ncct ncnc ncsc ncss ncst nctc nctv ncvs nnnn nnss nntn nnvt nscc nscs nssc nsss nstc nsts ntcc ntsc ntss nttv nvcc nvcs nvss nvtc nvtv s-vt sccc sccs scct scnt scsc scsn scst sctc sctn scts sctv sncc snns sntv sscc sscs ssns sssc ssss sstc ssts st-v stcc stcs stnn stns stss sttc stvs svcc svcs svns svsc tccc tcnn tctc tcts tncc tnts tscc tsst tstc tsts ttcn ttss tttt tvsn tvss tvtv vssc vvvv