c-cd cccc ccci cccp ccdc ccdi ccdp ccdr ccic ccid ccii ccip ccir ccoc ccod ccpp ccpr ccrc ccri ccrp cd-r cddr cdic cdii cdio cicc cici cico cicr cidc cidi cidp cidr ciid ciii ciko cikr cior cipo cipp circ ciri cirk ciro cirr ckck ckco ckdo ckoc ckoi ckoo ckor ckpc ckpr ckrc ckrd cock coco cocp codd codi coip coir cok- coko cood cook coop copd copi copo copp copr cor- corc cord cori cork coro corp corr cpic cpio cppd cpri crcc crcr crdc cric crik crip crkc crkp croc crod crok croo crop cror crpc dccc dcci dccp dcii dcio dcop dcpo dcrk dddd ddoc ddpo ddrc dici dick dico didi dido diii diki diko dioc diop dior dipc dipo dipp dird dirk dirr dkdc dkid doci dock doco dod- dodd dodi dodo doid doki doko dood dook doop door dopo dopp dopr dorc dord dori dork doro dorp dorr dpci dpcp dppc dprk dric drip drod drop iccc icci icco iccp iccr icdc icdd icdp icoc icod icor icpc icpd icpo icrc icrr idcr iddo idic idid idio idir idoc idrc idro iicd iiii iiio iioi iioo iiop iirc ikid ikki ikko ikoo ikri ioci iocp iod- iodd iodo ioii ioio ioko iooi iooo iori ipcc ipdc ipdi ipid ipko ipod ipop ippc ippo ippr ipri ircc ircd irdc irdo irdp iri- iric irid irio irip irki iroc irod irop irpc irrc irri k-ci k-id kccc kccd kcci kcck kccr kcdc kcdd kcdi kcdr kcic kcid kcii kcir kckc kckk kcko kckr kcor kcpc kcpi kcpo kcpr kcrc kcri kcro kcrp kcrr kdcc kdcd kdco kdcr kddc kddd kddi kddk kddr kdic kdio kdkd kdkk kdko kdkr kdoc kdok kdpi kdpr kdri kdro kicc kicd kick kicp kicr kidd kidi kidk kido kidr kiic kiid kiii kiik kiip kikc kikd kiki kikk kiko kikr kioc kiod kioi kiok kioo kip- kipi kipo kipp kipr kirc kiri kirk kiro kirp kirr kkcd kkci kkck kkco kkcr kkdc kkdd kkdo kkic kkid kkik kkkk kkoo kkor kkpc kkpk kkrc kkrk kkro kkrr kocd koci kock kocp kodi kodk kodo koii koir kokc koki kokk koko kokp kokr kooc kooi kook kooo koop koor kopi kopp kopr korc kord kori kork koro korr kpcc kpcr kpdc kpdo kpdr kpid kpir kpkk kpkr kpoc kpod kpok kpoo kpop kppc kppd kppk kppo kppp kppr kprc kprd kpri kprk kpro kprp kprr krcc krcd krci krco krdc krdd krdo krdr krid krik krio krkc krkd krki krkk krko krkr kroc krod kroi krok kroo krop kror krpi krpr krrc krri krrk krro krrr occc occi ocpd ocpp ocro ocrr odci oddd oddi odic odio odir odoo odop odor odrp oici oick oido oiii oiko oipc okic okir okko okok okor okpo okro oocr oodi ooid oooo oord opic opii opio opo- opor oppi oppo orci orco ordo ori- oric orid orio orko oro- orok oror orpc orpi orri orro pccc pcip pcod pcpp pcrc pcrd pdci pdcp pdic pdoc pdpr pdrc picc pici pick pico picr pido piip piki pikk piko pipi pipo pipp pirc piri pirk piro pirr pocd pock poco pod- podd podi podo poid poik poio poko pood pook poop poor pop- popc popi popo popp porc pori pork poro porr ppcc ppcd ppci ppdk ppic ppid ppod pppd pppo pppp pprc prcc prcd prcp pri- prid prii pro- proc prod proo prop prpd prrd prri rccc rcdc rcic rcid rcpd rcpi rcpo rcrd rdio rdoc rdpc ricc rick rico ridc ridd ridi rido riki rikk ripd ripi ripp ripr riri rocc rock roco rodd rodi rodo roid roik roio roir roki rokk roko rokr rood rooi rook roop roor ropo rorc rori rork roro rpdp rpii rrrr