c-cd cccc ccci ccdc ccdi ccdr ccic ccid ccii ccir ccrc ccri cd-r cddr cdic cdii cicc cici cicr cidc cidi cidr ciid ciii cikr circ ciri cirk cirr ckck ckrc ckrd crcc crcr crdc cric crik crkc dccc dcci dcii dcrk dddd ddrc dici dick didi diii diki dird dirk dirr dkdc dkid dric iccc icci iccr icdc icdd icrc icrr idcr idic idid idir idrc iicd iiii iirc ikid ikki ikri ircc ircd irdc iri- iric irid irki irrc irri k-ci k-id kccc kccd kcci kcck kccr kcdc kcdd kcdi kcdr kcic kcid kcii kcir kckc kckk kckr kcrc kcri kcrr kdcc kdcd kdcr kddc kddd kddi kddk kddr kdic kdkd kdkk kdkr kdri kicc kicd kick kicr kidd kidi kidk kidr kiic kiid kiii kiik kikc kikd kiki kikk kikr kirc kiri kirk kirr kkcd kkci kkck kkcr kkdc kkdd kkic kkid kkik kkkk kkrc kkrk kkrr krcc krcd krci krdc krdd krdr krid krik krkc krkd krki krkk krkr krrc krri krrk krrr rccc rcdc rcic rcid rcrd ricc rick ridc ridd ridi riki rikk riri rrrr