cccc cccs cccu ccss ccst cctc cctt ccuc ccus ccut cscc cscs cstc csts csus csys ctsc ctss ctsu ctts cucc cuss cust cusu cusy cut- cutc cuts cutt cuy- cyc- cycc cycs cyst cyt- cyy- cyyc sccc sccs scct sccy scsc scst scsu sctc scts scut sscc sscs sssc ssss sstc ssts stcc stcs stcu stss sttc stuc stus stut stuy stys suc- succ sucs sus- suss sust susu susy sutu suty suus suyu syss syst sytt tccc tccu tctc tcts tscc tsst tstc tsts tsys ttss tttt ttys tucc tusc tuss tust tuts tutt tutu tuty tuys tyss tyst tytt tyty tyus ucsc ucst ucsu ucut uscc uscs ussc usss usst ussu ussy ustc usts usus utsc uttu uuuu uyts yccc yctc yssu yust yutu yuty yuyu yyyy