cccc ccci cccs ccic ccii ccis ccsi ccss ccst cctc cctt cicc cici cics cict ciii ciis ciit cis- cisc ciss cist cisy citi cits citt city cscc csci cscs csis csit cstc csts csys ctic ctsc ctss ctts cyc- cycc cycs cyst cyt- cyy- cyyc iccc icci iccs icct icis icsc icsi icss icst icts iiii iiis iiit iisc iisi iist iitt iscc isci iscs isct isic isis isit issc issi isss issy istc isti ists isty isys itcs itic itis itsi itsy itty s-ic s-ii sccc sccs scct sccy sci- scic scis scit scsc scsi scst sctc scts sicc sici sics siit sisc sisi siss sist sisy sit- sitc siti sits sitt sity siyi sscc ssci sscs ssis ssit sssc sssi ssss sstc ssts stcc stcs stic stis stit stsi stss sttc stys syis syss syst sytt tccc tctc tcts ticc tics tiit tisi tiss tist titc titi tits titt tiyi tscc tsis tssi tsst tstc tsts tsys ttss tttt ttys tyss tyst tyti tytt tyty yccc yctc yiss yist yiti ysii yyyy