propernun propiono- prorenone purpurein purpureo- purpurine rope-ripe runkeeper runner-up runrunrun upokororo

erioneuron errorprone eurorunner ikko-ikki ioninenine kenroku-en kinikinnik kinikkinik kinnekinik kinnikinik knipperkin knopkierie kor-i-noor kouroukoro krionerion kukkurukuu kununoppin neurokinin nike-orion nineoneone nkurenkuru one-on-one perperikon pikroprion poo-pourri pooriepoor preopinion prokopenko propernoun

error-prone kinnekinnik kinnikinnik kornerupine nine-o-nine nononurrene pepperupper pip-pip-pip pipe-opener pirenperone proper-noun

keepie-uppie keepupupkeep nine-one-one pepper-upper pierrerenoir propuppropup union-rennen

pinkie-pinkie runner-runner

ioooooooooooooo oneoneoneoneone

one-nine-nine-nine