c-cd cccc ccci cccv ccdc ccdi ccdr ccic ccid ccii ccir cciv ccoc ccod ccrc ccri ccvi ccvo cd-r cddr cdic cdii cdio cdiv cdvd cdvi cicc cici cico cicr cidc cidi cidr ciid ciii cior circ ciri ciro cirr civc civo coco codd codi coir cood cor- corc cord cori coro corr covo crcc crcr crdc cric croc crod croo cror cvcc cvid cvii cvrd cvrr dccc dcci dccv dcii dcio dciv dcvd dcvi dddd ddoc ddrc dici dico didi dido diii diiv dioc dior dird dirr divd divi divo doci doco dod- dodd dodi dodo doid dood door dorc dord dori doro dorr dovi dric drod dvdr dvi- dvii dvir dvor iccc icci icco iccr icdc icdd icoc icod icor icrc icrr idcr iddo idic idid idio idir idoc idrc idro idvd iicd iiii iiio iioi iioo iirc ioci iod- iodd iodo ioii ioio iooi iooo iori ircc ircd irdc irdo iri- iric irid irio iroc irod irov irrc irri ivdr ivic ivod ivor occc occi ocro ocrr odci oddd oddi odic odio odir odoo odor oici oido oiii oocr oodi ooid oooo oord orci orco ordo ori- oric orid orio oro- oror orri orro orvr ovi- ovid ovo- ovod ovoo rccc rcdc rcic rcid rcrd rcvr rdio rdoc ricc rico ridc ridd ridi rido riri rivo rocc roco rodd rodi rodo roid roio roir rood rooi roor rorc rori roro rovi rovo rrrr rv-c vcci vdcc vdio vic- vici vico vidi vido viii virc viri viro virr vivi vivo vodo voic void voio voir vooc voor vor- vord vori voro vrci vrdi vrio vroc vvvv