cccc cccu ccee ccrc ccre ccuc cec- cece ceec ceke cer- cerc cere ceze ckck cker ckrc crcc crce crcr crcz cre- crec cree creu crkc crue cruk cruz cucc cuce cuck cuek cuer cuk- cuke cure curr eccc ecce ecrc ecrr ecru eeee eeke eerc eeze ekek eker ekur ercc erce erec erer erez erke errc erre eruc erur euer eur- eurc eure ezek ezer ezuz kccc kcck kccr kccu kcec kcee kceu kcez kckc kckk kckr kckz kcrc kcrr kcru kcrz kcue kcuk kcuz kcze kczz keck kecr keek keer kekc keke keku ker- kerc kere kerk kerr keru kerz keur keze kezr kezz kkck kkcr kkez kkkk kkrc kkre kkrk kkrr kkrz kkuu kkzu kkzz krcc krce krcu krec kree krek kreu krez krkc krke krkk krkr krku krkz krrc krre krrk krrr krrz kruc krue kruk krur kruz krze krzk krzr krzz kucc kuce kucr kuek kueu kuke kukk kuku kure kurk kurr kuru kurz kuuk kuur kuuu kuuz kuze kuzu kuzz kzcr kzee kzer kzke kzkr kzkz kzrc kzrk kzrr kzrz kzue kzuu kzuz kzzk kzzr kzzz rccc recc rece reck recr recu recz reek reke rere reru reue reuk reuu reze rezu rrrr ruce ruck ruer ruez ruke rukk ruku rurc rure ruru ruze ucrc ukcc ukek ukeu ukrc ukur ure- urke urre uruk urur uruz uuuu uzer zeck zeek zeke zekr zeku zerk zeze zrce zrze zuce zuck zuke zukr zurr zuru zuuk zuzu zzzz