cccc ccci cccs ccic ccii ccis ccix ccoc ccsi ccss ccst cctc cctt ccxi cicc cici cico cics cict ciii ciis ciit cios cis- cisc ciss cist cisy citi cito cits citt city cixi coco coct cois coit coix coos coot cosc cosi coso coss cost cosy cotc coti coto cots cott coty coxy coyo coys coyt cscc csci csco cscs csio csis csit csix csos csot csox cstc csto csts cstx csxt csys ctic ctos ctot ctsc ctss ctts cxii cxix cxxi cxxx cyc- cycc cycs cyst cyt- cyto cyy- cyyc iccc icci icco iccs icct icis icoc icos icsc icsi icss icst icts iiii iiio iiis iiit iioi iioo iios iisc iisi iist iitt ioci ioii ioio ioit iooi iooo ioos ioso ioto iscc isci isco iscs isct isic isis isit iso- isoc isos issc issi isso isss issy istc isti isto ists isty isys itcs itic itis itoi itoo itos itsi itso itsy itto itty ixos ixxi iyos occc occi occt ocis ocos oct- octi octo octs octy ocys oici oiii oios oisc oist oitc oiti oooo ooos oosi oost oots ooty oscc osci osco osii osis osoi osoo osos ossi osso ossy ostc osti osts osyt otic otis otit oto- otoo otos otoy otso otti otto otts oxi- oxic oxis oxo- oxos oxox oxsi oxxo oxy- oyss oyst s-ic s-ii s-os sccc sccs scct sccy sci- scic scio scis scit scoo scot scox scsc scsi scso scst sctc scto scts sicc sici sico sics siit sios siot siox sisc sisi siss sist sisy sit- sitc siti sito sits sitt sity sixo sixt sixx siyi soci soco socs socx socy soic sois soit soos soot sooy sosi soso soss sost sotc soto sots soxs soyo soys soyt sscc ssci sscs ssis ssit ssoc ssot sssc sssi ssss sstc ssts stcc stcs stic stio stis stit stix stoo stos stot stox stoy stsi stss sttc stys styx syco syis syso syss syst sytt syxt tccc tcos tctc tcts ticc tico tics tiit tios tisi tiso tiss tist titc titi tito tits titt tixt tiyi tiyo to-y toci toco tois toit toos toot tosc tosi toso toss tost tosx tosy totc toti toto tots tott toty tox- toxi toxo toxs toxt toyo toys toyt tscc tsis tsix tsoi tsos tsoy tssi tsst tstc tsts tsys ttoy ttss tttt ttys txii tyco tyss tyst tyti tyto tytt tyty tyxt xcii xcis xico xics xiii xisi xist xito xixi xoco xois xoxo xoyo xxii xxix xxxi xxxo xxxx xxxy xyst yccc yctc yiss yist yiti yoit yoix yoot yosi yoso yost yott yoyo ysco ysii yyyy