cccc cccs cchs cchy ccss ccst cctc cctt chch chcs chhs chsc chsh chst chtt chy- chyc cscc csch cscs cshs cstc csts csys cths ctsc ctss ctts cyc- cycc cycs cyst cyt- cyy- cyyc hccc hcch hccs hchs hcsc hcss hcst hhhh hhhs hscc hsct hshs hsts htcc hths htsc sccc sccs scct sccy sch- schh schs scsc scsh scst sctc scts shcc shhh shhs shsc shts shyt sscc sscs sshs sssc sssh ssss sstc ssth ssts stcc stch stcs sths stss sttc stys sych syht syss syst syth sytt tccc tch- tchh tchs tcsh tctc tcts thch thss thts thyh thys tscc tshs tsst tstc tsts tsys ttss tttt ttys tyht tyss tyst tytt tyty yccc ycch yctc yssh ytch ytht yyyy