filfil filius filli- fillip fillis fillup fislis fissi- flipps flisks fluffs fulfil fullup fusils ikkiss ilkufi illful illipi illupi ipikil islisp kiffis kiisli kikiki kikkik kikkli kilifi kilkis killip kip-up kipusi kispus kissui kissup kisuki kluski kuklik kuklis kukuis kukuli kulfis kuliki kulilu kululu kuppis kuskus kuspuk kuusik lifful lifull lilipi lilius lillis lilliu liulis lufful lukulu lullus lusuku piilsi pikuls piliki pilili pillus pilpul pipili pipipi pippip pippul pissis piupiu piusii pluski ppilku pppppp ppsspp puffup pukpui pullip pullup pullus pulpi pulsus pupils puppis pusill pussi s-plus siiiii sikulu silili silius silki sillik silluk sisisi sisulu skiffs skills skulks skulls skulsk slipup sliski sluffs slupsk spiffs spill- spills spilus spliff splifs sufli suliki sulili suppli suslik susuki susulu suuksu u-kiss ulfuls ulpius upfill upskip upskis upslip