c-cd cccc ccci cccu ccdc ccdi ccdr ccic ccid ccii ccir ccrc ccri ccuc cd-r cddr cdic cdii cicc cici cicr cicu cidc cidi cidr ciid ciii cikr circ ciri cirk cirr ciuc ckck ckdu ckrc ckrd crcc crcr crdc cric crik criu crkc crud cruk cucc cuci cuck cudi cui- cuir cuk- curd curi curr dccc dcci dccu dcii dcrk dddd ddrc dici dick didi didu diii diki diku dird dirk dirr dkdc dkid dric drui druk druu duck dudd dudu duid duir duki duku duri durk duru duur iccc icci iccr iccu icdc icdd icrc icrr icru idcr idic idid idir idku idrc iicd iiii iirc iiuc ikid ikki ikri ircc ircd ircu irdc iri- iric irid irki irrc irri iucc iuiu k-ci k-id kccc kccd kcci kcck kccr kccu kcdc kcdd kcdi kcdr kcdu kcic kcid kcii kcir kciu kckc kckk kckr kcrc kcri kcrr kcru kcui kcuk kdcc kdcd kdcr kddc kddd kddi kddk kddr kdic kdkd kdkk kdkr kdri kduc kdur kicc kicd kick kicr kidd kidi kidk kidr kidu kiic kiid kiii kiik kiiu kikc kikd kiki kikk kikr kiku kirc kiri kirk kirr kiru kiur kiuu kkcd kkci kkck kkcr kkdc kkdd kkic kkid kkik kkkk kkrc kkrk kkrr kkuu krcc krcd krci krcu krdc krdd krdr krdu krid krik krkc krkd krki krkk krkr krku krrc krri krrk krrr kruc krui kruk krur kucc kucd kuci kucr kudd kudi kudu kuic kuik kuki kukk kuku kurd kuri kurk kurr kuru kuuk kuur kuuu rccc rcdc rcic rcid rcrd ricc rick ridc ridd ridi riki rikk riku riri rrrr ruci ruck rudd rudi ruid ruki rukk ruku rurc rurd ruri ruru ruud ucci ucdc ucdd ucrc uddi udic udid udir uduk uirr ukcc ukrc ukur urci urdu uric urik uriu urri uruk urur uuri uuuu