c-cd cccc ccci ccdc ccdi ccdr ccic ccid ccii ccir ccoc ccod ccrc ccri ccrt cctc cctt cd-r cddr cdic cdii cdio cdot cicc cici cico cicr cict cidc cidi cidr cidt ciid ciii ciit cior circ ciri ciro cirr cirt citi cito citt coco coct codd codi coir coit cood coot cor- corc cord cori coro corr cort cotc coti coto cott crcc crcr crdc cric crit croc crod croo cror crot crrt crtc ctic ctor ctot ctrc dccc dcci dcct dcii dcio dctc dddd ddoc ddot ddrc dici dico dict didi dido diii dioc dior diot dird dirr dirt diti dito ditt doci doco doct dod- dodd dodi dodo doid doit dood door doot dorc dord dori doro dorr dort dotd doti doto dott dric drit drod drot dtcc dtor dtot iccc icci icco iccr icct icdc icdd icoc icod icor icrc icrr icrt idcr iddo idic idid idio idir idoc idrc idro iicd iiii iiio iiit iioi iioo iirc iitr iitt ioci iod- iodd iodo ioii ioio ioit iooi iooo iori ioto ircc ircd irdc irdo iri- iric irid irio iroc irod irrc irri irti itdo itic itoi itoo itor itri itto occc occi occt ocro ocrr oct- octi octo odci oddd oddi odic odio odir odoo odor odot oici oido oiii oirt oitc oiti oocr oodi ooid oooo oord oort orci orco ordo ori- oric orid orio orit oro- oror orot orri orro ortc orto otcd otic otit oto- otoo otor otro otti otto rccc rcdc rcic rcid rcrd rctc rcti rdio rdoc ricc rico rict ridc ridd ridi rido riot riri riti rito ritt rocc roco rodd rodi rodo roid roio roir roit rood rooi roor root rorc rori roro rort rotc roti roto rotr rott rrrr rtcc rtdt tccc tcdd tctc tdor tdri ticc tico tidc tidd tiit tird tiri tiro tirr titc titi tito titt toci toco todd todi todo todt toid toit tood toor toot torc tord tori toro torr tort totc totd toti toto totr tott trcc tri- tric trio trit troc trod troi troo trot trtc trtr tttt