-lock c-cor ccccc ccrcl cfour clcff clock cloff cloof clook cloor clour cluck cluff clurr co-co cocc- cocco cocol cocur cofur cokk- coll- collo colo- colok color colur coolo corfo corfu corlu coro- corol corrl couco coull courl couru crock croco croll crook crool crouk croul cruck crull cruor cucuk cukor cullu culur cuoco curll curlo curlu curro flocc flock floko flook floor floro floru flour fluck fluff fluo- fluor flurr folck folco follo forro forur fouro frock fruko fu-fu fucko fuco- fulco fullf fullo fuoco furo- furor klock kloof ko-ko kocul kokko kokor kokou kokur kolff kollo kollu kolol kolur koolu kooru korck korff korku korol koror korro koruk koufu koulo krock kroll krufc krull kucuk kukko kukok kukur kullo kullu kulor kulul kulur kurku kurlu kuruc kuruk loco- locro lofou lokur lollo lolol loock lookf lorck loruk louro lucko lucur lukko lukok lukou luluc lulul lurck occur ockro ocllo ocul- oculo offof ofour okfol okkur okoc okoro okuku okuru ollur olour ooooo orfor orful orlok oroco orolu oruku oruro oullo ouoro ourol r-co- rcolo ro-ro rocco rocko rocor rocou rofor rokkk rolfo rollc rollo rolok rouko roulk roull rucul ruffo rufo- rufol rullo ufofu ullur ulock ululu uluru urour urucu uuork uuuuu