c-cd cccc ccci cccs ccdc ccdi ccdr ccds ccic ccid ccii ccir ccis ccoc ccod ccrc ccri ccrs ccrt ccsd ccsi ccss ccst cctc cctt cd-r cdcs cddr cdic cdii cdio cdis cdos cdot cdrs cdss cicc cici cico cicr cics cict cidc cidi cidr cids cidt ciid ciii ciis ciit cior cios circ ciri ciro cirr cirs cirt cis- cisc cisd cisr ciss cist citi cito cits citt coco coct codd codi cods coir cois coit cood coos coot cor- corc cord cori coro corr cors cort cosc cosi coso coss cost cotc coti coto cots cott crcc crcr crdc cric cris crit croc crod croo cror crot crrt crss crst crtc crts cscc cscd csci csco cscr cscs csdr csid csio csir csis csit csor csos csot csrc csrd csrs cssd cssr cstc cstd csto cstr csts ctic ctor ctos ctot ctrc ctrs ctsc ctss ctts dccc dcci dccs dcct dcds dcii dcio dcis dcos dcsc dcss dctc dcts dddd ddoc ddot ddrc ddss ddts dici dico dict didi dido dids diii diis dioc dior dios diot dird dirr dirs dirt dis- disc disd disi diso diss dist diti dito dits ditt doci doco docs doct dod- dodd dodi dodo dods doid dois doit dood door doos doot dorc dord dori doro dorr dors dort dosi doso doss dost dotd doti doto dots dott dric drit drod drot drrs dscc dscr dscs dsdr dsos dsrc dsri dsrr dssc dssi dsst dstc dsto dsts dtcc dtor dtot dtss iccc icci icco iccr iccs icct icdc icdd icis icoc icod icor icos icrc icrr icrs icrt icsc icsd icsi icsr icss icst icts idcr iddo idic idid idio idir idis idoc idos idrc idro idsc idso idss idts iicd iiii iiio iiis iiit iioi iioo iios iirc iirs iisc iisd iisi iisr iist iitr iitt ioci iod- iodd iodo ioii ioio ioit iooi iooo ioos iori iors ioso ioto ircc ircd ircs irdc irdo irds iri- iric irid irio iris iroc irod irrc irri irrs irti irts iscc iscd isci isco iscr iscs isct isdc isds isic isis isit iso- isoc isor isos isri issc issi isso issr isss istc istd isti isto istr ists itcs itdo itic itis itoi itoo itor itos itri itrs itsi itso itto occc occi occt ocds ocis ocos ocro ocrr ocrs oct- octi octo octs odci oddd oddi odds odic odio odir odis odoo odor odos odot odso odts oici oido oids oiii oios oirt oisc oisd oist oitc oiti oocr oodi ooid oooo ooos oord oort oosi oost oots orci orco orcs ordo ords ori- oric orid orio oris orit oro- oror oros orot orri orro orrs orsi orso ortc orto orts oscc osci osco osdi osii osis osoi osoo osor osos osrd osro ossd ossi osso ostc osti ostr osts otcd otic otis otit oto- otoo otor otos otro otrs otso otti otto otts rccc rccs rcdc rcds rcic rcid rcis rcos rcrd rcsc rcsd rcsi rcss rctc rcti rcts rdio rdoc rdos rdso ricc rico rics rict ridc ridd ridi rido rids riis rios riot riri rirs risc risd risi riso riss rist riti rito rits ritt rocc roco rocs rodd rodi rodo rods roid roio roir rois roit rood rooi roor roos root rorc rori roro rort rosc rosi roso ross rost rotc roti roto rotr rots rott rrrr rscc rscs rsdd rsds rsid rsis rsos rsts rtcc rtdt rtss rtts s-ic s-ii s-os sccc sccs scct scdc scds sci- scic scid scio scir scis scit scoo scor scot scr- scrc scri scrs scsc scsd scsi scso scsr scst sctc sctd scto sctr scts sdcc sdco sddc sdds sdic sdio sdot sdrc sdrs sdsc sdss sicc sici sico sics sidd sidi sido sidr sids siit siod sior sios siot sirc siri siro sirr sirs sirt sisc sisd sisi siss sist sit- sitc sitd siti sito sits sitt soci soco socr socs sodd sodo sods soic soir sois soit sood soor soos soot sord sori soro sorr sors sort sosi soso soss sost sotc soto sots srcc srct sris sros srsd srtr sscc ssci sscs ssdc ssdd ssid ssis ssit ssoc ssot ssrc ssri ssrs sssc sssi ssss sstc sstd ssts stcc stcs stds stic stid stio stir stis stit stod stoo stor stos stot strc strd stri stro strs stsi stss sttc sttd sttr tccc tcdd tcos tctc tcts tdis tdor tdri tdss ticc tico tics tidc tidd tids tiit tios tird tiri tiro tirr tirs tisi tiso tiss tist titc titi tito tits titt toci toco todd todi todo tods todt toid tois toit tood toor toos toot torc tord tori toro torr tors tort tosc tosi toso toss tost totc totd toti toto totr tots tott trcc tri- tric trio tris trit troc trod troi troo tros trot trsd trsi trst trtc trtr tscc tsid tsis tsoi tsos tssi tssr tsst tstc tsts ttss tttt