cccc ccee ccoc ccrc ccre cec- cece ceco ceec ceke ceor cer- cerc cere cero ceze ckck ckco cker ckoc ckoo ckor ckrc coce cock coco cok- coke coko cook cor- corc core cork coro corr coze cozz crcc crce crcr crcz cre- crec cree creo crkc croc croe crok croo cror croz eccc ecce ecco ecko eco- ecrc ecrr eeee eeke eeoc eerc eero eeze ekco ekek eker eore ercc erce erec erer erez erke eroc eroe eroo errc erre erro ezek ezer ezzo kccc kcck kccr kcec kcee kceo kcez kckc kckk kcko kckr kckz kcoe kcor kcoz kcrc kcro kcrr kcrz kcze kczo kczz keck keco kecr keek keer kekc keke keko keok ker- kerc kere kerk kero kerr kerz keze kezr kezz kkck kkco kkcr kkez kkkk kkoo kkor kkoz kkrc kkre kkrk kkro kkrr kkrz kkzz kock kokc koke kokk koko kokr kokz kooc kook kooo koor kooz korc kore kork koro korr koze kozk kozo kozr krcc krce krco krec kree krek kreo krez krkc krke krkk krko krkr krkz kroc kroe krok kroo kror kroz krrc krre krrk krro krrr krrz krze krzk krzr krzz kzcr kzee kzer kzke kzkr kzkz kzoo kzor kzoz kzrc kzrk kzro kzrr kzrz kzzk kzzo kzzr kzzz o-eo occc oce ocee ocke ocre ocro ocrr oec- oecc oeec oere oker okko okok okor okre okro oocr ooer oooo oore ooze orce orco ore- orec orek oreo orer orke orko oro- oroe orok oror oroz orro orzk orzo ozee ozek ozer rccc recc rece reck recr recz reek reke reko rere rero reze rocc roce rock roco roer roke rokk roko rokr rook roor rooz rorc rore rork roro roze rozz rrrr z-ro zeck zeek zeke zeko zekr zerk zero zeze zoco zoke zoo- zook zorc zore zork zoro zozo zrce zrze zzzz