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% replaces any number of letters (la% - lake, lamp)_ replaces one letter (ca_ - car, cat)

Crossword clues for Peppermint, for one. 4 letters:

HERB: Peppermint, for one.
TOMBOY: Peppermint Patty, for one
FRECKLE: One of six on Peppermint Patty's cheeks