c-cd cccc cccf ccci ccdc ccdf ccdi ccdr ccfc ccfd ccff ccfi ccic ccid ccii ccir ccoc ccod ccrc ccrf ccri cd-r cddr cdic cdii cdio cfcf cfco cffr cfor cicc cici cico cicr cidc cidi cidr ciff ciid ciii ciko cikr cior circ ciri cirk ciro cirr ckck ckco ckdo ckfi ckfr ckoc ckoi ckoo ckor ckrc ckrd cock coco codd codi cofc coff cofi coif coir cok- coko cood coof cook cor- corc cord corf cori cork coro corr crcc crcr crdc crfc cric crif crik crkc croc crod crok croo cror dccc dcci dcfc dcii dcio dcrk dddd ddoc ddrc dfcc dfco dfrf dfri dici dick dico didi dido dif- diff diii diki diko dioc dior dird dirk dirr dkdc dkid doci dock doco dod- dodd dodi dodo doff doid doki doko dood doof dook door dorc dord dorf dori dork doro dorr drfc dric drif drod drof f--k fccf fcic fcii fdic fdoc ffcc ffff ffii ffrr ficc fick fico fidc fidf fido fifc fiff fifi fifo fiii fiki fior firk foci fock foco fofo foid foki food foof fook for- ford fori fork foro forr frcc frfc fric frid frik frio iccc iccf icci icco iccr icdc icdd icoc icod icor icrc icrf icrr idcr iddo idfc idic idid idio idir idoc idrc idrf idro ifcd ifco ific ifid ifor ifrf ifri iicd iiii iiio iioi iioo iirc ikid ikki ikko ikoo ikri ioci iod- iodd iodo iofc ioii ioio ioko ioof iooi iooo iori ircc ircd irdc irdo iri- iric irid irio irki iroc irod irrc irri k-ci k-id kccc kccd kcci kcck kccr kcdc kcdd kcdi kcdr kcfc kcfd kcfi kcfo kcic kcid kcif kcii kcir kckc kckf kckk kcko kckr kcof kcor kcrc kcri kcro kcrr kdcc kdcd kdco kdcr kddc kddd kddf kddi kddk kddr kdfc kdfi kdfo kdfr kdic kdio kdkd kdkk kdko kdkr kdoc kdok kdrf kdri kdro kfcd kfcf kfco kfcr kfff kffk kfio kfir kfok kfoo kfor kfrc kfrd kfri kfro kfrr kicc kicd kick kicr kidd kidi kidk kido kidr kiff kifr kiic kiid kiii kiik kikc kikd kikf kiki kikk kiko kikr kioc kiod kioi kiok kioo kirc kirf kiri kirk kiro kirr kkcd kkci kkck kkco kkcr kkdc kkdd kkdo kkfi kkfr kkic kkid kkik kkkk kkoo kkor kkrc kkrf kkrk kkro kkrr kocd kocf koci kock kodi kodk kodo kofc koff kofi kofk kofo koii koir kokc kokf koki kokk koko kokr kooc kooi kook kooo koor korc kord korf kori kork koro korr krcc krcd krci krco krdc krdd krdo krdr krfc krfd krff krfo krid krik krio krkc krkd krki krkk krko krkr kroc krod krof kroi krok kroo kror krrc krrf krri krrk krro krrr occc occi ocro ocrr odci oddd oddi odic odio odir odoo odor ofcr ofdr off- offc offo offr ofid ofik ofor oici oick oido oiii oiko okic okir okko okok okor okro oocr oodi ooff ooid oooo oord orci orco ordo orff orfi ori- oric orid orif orio orko oro- orof orok oror orri orro rccc rcdc rcfc rcic rcid rcrd rdio rdoc rfdi rffc rfic rfid ricc rick rico ridc ridd ridi rido riff riif riki rikk riri rkkf rocc rock roco rodd rodi rodo rofc roff rofo roid roif roik roio roir roki rokk roko rokr rood roof rooi rook roor rorc rori rork roro rrfc rrif rrrr