clumps cppcms crumps cullum cumul- cuppul cuprum curlup curmur cursus cuscus lrpprc lucrum lullus lummus lumpur lumpus lurulu luscus mccrum mlscup mrsulu muccus mucluc mullum mullur mullus mulmul mulmur mulsum murmur muscul musmus mussum mussup muumuu plumps pppppp ppsspp pullup pullur pullus pulsus pumpup purpur ruccus rumpus ruscus russus s-curl s-l-m s-plus scrump scrums sculls sculps slrmrs slumps slurps srprss succur succus sulcus sulpur sum-up summum sumsup sumuru surcul sursum suruc surumu susulu susumu susurr ucurum ullucu umurlu upcurl upslur upsssc urucup uruppu usurps