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 crcz crdc cric crik crkc dccc dcci dcii dcrk dddd ddrc dici dick didi diii diki dird dirk dirr dizi dizz dkdc dkid dric dzik dzki dzrr 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 izki k-ci k-id kccc kccd kcci kcck kccr kcdc kcdd kcdi kcdr kcdz kcic kcid kcii kcir kckc kckk kckr kckz kcrc kcri kcrr kcrz kczz kdcc kdcd kdcr kddc kddd kddi kddk kddr kdic kdiz kdkd kdkk kdkr kdri kdzr kdzz kicc kicd kick kicr kidd kidi kidk kidr kidz kiic kiid kiii kiik kikc kikd kiki kikk kikr kikz kirc kiri kirk kirr kizz kkcd kkci kkck kkcr kkdc kkdd kkdz kkic kkid kkik kkkk kkrc kkrk kkrr kkrz kkzz krcc krcd krci krdc krdd krdr krdz krid krik kriz krkc krkd krki krkk krkr krkz krrc krri krrk krrr krrz krzi krzk krzr krzz kzcd kzcr kzdc kzdr kzid kziz kzkr kzkz kzrc kzrd kzrk kzrr kzrz kzzd kzzi kzzk kzzr kzzz rccc rcdc rcic rcid rcrd ricc rick ridc ridd ridi riki rikk riri rizi rizk rizz rrrr zick zidi ziki zikr zirc ziri zizi zizz zzzz