cccc cccs ccnc ccnr ccns ccoc ccrc ccrs ccrt ccsn ccss ccst cctc cctt cnco cnrc cnrr cnrt cnss cntc cntr coco coct con- conc conn cono cons cont coon coos coot cor- corc corn coro corr cors cort cosc coso coss cost cotc cotn coto cots cott crcc crcr crns croc cron croo cror crot crrt crss crst crtc crts cscc csco cscr cscs csor csos csot csrc csrs cssr cstc csto cstr csts ctns ctor ctos ctot ctrc ctrn ctrs ctsc ctsn ctss cttn ctts nccc nccn nccr nccs ncct ncnc ncoc ncor ncos ncrc ncsc ncss ncst nctc nctr nnnn nnos nnot nnss nntn noco nocs noct non- nonn nono nons nont noo- noon nooo noor noos noot nor- norc norn noro norr nors nort nos- noss nost not- noto nots nott nrcs nroc nron nrrc nrsc nrts nscc nscs nsnr nsos nsrc nssc nsso nssr nsss nstc nsts ntcc ntrc ntsc ntss ntto nttr occc occn occt ocon ocos ocro ocrr ocrs oct- octo octs onc- onco onct onno onon onor onos onsc onso onst ont- ontc onto oocr oons oont oooo ooos oort oost oots orco orcs ornc orno orns oro- oron oror oros orot orro orrs orso ortc orto orts oscc osco osno osnr osoo osor osos osro osso ostc ostr osts oto- oton otoo otor otos otro otrs otso otto otts rccc rccs rcnr rcon rcos rcsc rcss rctc rcts rnco rncs rnnt rnot rocc roco rocs ronc rono rons ront roon roor roos root rorc roro rort rosc roso ross rost rotc rotn roto rotr rots rott rrrr rscc rscn rscs rsnn rsno rsnr rsos rsts rtcc rtns rtss rtts s-os sccc sccs scct scnr scnt scon scoo scor scot scr- scrc scrn scrs scsc scsn scso scsr scst sctc sctn scto sctr scts sncc snco snns snoc snoo snor snos snot snrs sntr soco socr socs son- sono sons sont soon soor soos soot sorn soro sorr sors sort soso soss sost sotc sotn soto sots srcc srct srnn srno sros srtr sscc sscs ssns ssoc ssot ssrc ssrs sssc ssss sstc ssts stcc stcs stnn stnr stns ston stoo stor stos stot strc strn stro strs stss sttc sttr tccc tcnn tcon tcos tctc tcts tncc tnts toco tonn tono tons toon toor toos toot torc torn toro torr tors tort tosc toso toss tost totc toto totr tots tott trcc trno troc tron troo tros trot trst trtc trtr tscc tsos tssr tsst tstc tsts ttcn tton ttss tttt