c-cd cccc ccci cccp cccv ccdc ccdi ccdp ccdr ccic ccid ccii ccip ccir cciv ccoc ccod ccpp ccpr ccrc ccri ccrp ccvi ccvo cd-r cddr cdic cdii cdio cdiv cdvd cdvi cicc cici cico cicr cidc cidi cidp cidr ciid ciii cior cipo cipp circ ciri ciro cirr civc civo coco cocp codd codi coip coir cood coop copd copi copo copp copr cor- corc cord cori coro corp corr covo cpic cpio cppd cpri cpvc crcc crcr crdc cric crip croc crod croo crop cror crpc cvcc cvid cvii cvrd cvrr dccc dcci dccp dccv dcii dcio dciv dcop dcpo dcvd dcvi dddd ddoc ddpo ddrc dici dico didi dido diii diiv dioc diop dior dipc dipo dipp dird dirr divd divi divo doci doco dod- dodd dodi dodo doid dood doop door dopo dopp dopr dorc dord dori doro dorp dorr dovi dpci dpcp dppc dric drip drod drop dvdr dvi- dvii dvir dvor dvrp 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 idvd iicd iiii iiio iioi iioo iiop iirc ioci iocp iod- iodd iodo ioii ioio iooi iooo iori ipcc ipdc ipdi ipid ipod ipop ippc ippo ippr ipri ircc ircd irdc irdo irdp iri- iric irid irio irip iroc irod irop irov irpc irrc irri ivdr ivic ivod ivor occc occi ocpd ocpp ocro ocrr odci oddd oddi odic odio odir odoo odop odor odrp oici oido oiii oipc oocr oodi ooid oooo oord opic opii opio opo- opor oppi oppo orci orco ordo ori- oric orid orio oro- oror orpc orpi orri orro orvr ovi- ovid ovo- ovod ovoo ovpp pccc pcip pcod pcpp pcrc pcrd pdci pdcp pdic pdoc pdpr pdrc picc pici pico picr pido piip pipi pipo pipp pirc piri piro pirr pivo pocd poco pod- podd podi podo poid poio pood poop poor pop- popc popi popo popp porc pori poro porr povo ppcc ppcd ppci ppic ppid ppod pppd pppo pppp pprc prcc prcd prcp pri- prid prii priv pro- proc prod proo prop prov prpd prrd prri pvco pvdc rccc rcdc rcic rcid rcpd rcpi rcpo rcrd rcvr rdio rdoc rdpc ricc rico ridc ridd ridi rido ripd ripi ripp ripr riri rivo rivp rocc roco rodd rodi rodo roid roio roir rood rooi roop roor ropo rorc rori roro rovi rovo rpdp rpii rrrr rv-c vcci vdcc vdcp vdio vic- vici vico vidi vido viii vipr virc viri viro virr vivi vivo vodo voic void voio voip voir vooc voor vor- vord vori voro vpro vrci vrdi vrio vroc vvvv