cccc ccci cccu ccic ccii ccir ccrc ccri ccuc cicc cici cicr cicu ciii cikr circ ciri cirk cirr ciuc ckck ckrc crcc crcr cric crik criu crkc cruk cucc cuci cuck cui- cuir cuk- curi curr iccc icci iccr iccu icrc icrr icru iiii iirc iiuc ikki ikri ircc ircu iri- iric irki irrc irri iucc iuiu k-ci kccc kcci kcck kccr kccu kcic kcii kcir kciu kckc kckk kckr kcrc kcri kcrr kcru kcui kcuk kicc kick kicr kiic kiii kiik kiiu kikc kiki kikk kikr kiku kirc kiri kirk kirr kiru kiur kiuu kkci kkck kkcr kkic kkik kkkk kkrc kkrk kkrr kkuu krcc krci krcu krik krkc krki krkk krkr krku krrc krri krrk krrr kruc krui kruk krur kucc kuci kucr kuic kuik kuki kukk kuku kuri kurk kurr kuru kuuk kuur kuuu rccc rcic ricc rick riki rikk riku riri rrrr ruci ruck ruki rukk ruku rurc ruri ruru ucci ucrc uirr ukcc ukrc ukur urci uric urik uriu urri uruk urur uuri uuuu