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

Crossword clues for Brother of Groucho and Harpo:

GUMMOMARX: Brother of Groucho and Harpo
CHICO: Brother of Harpo and Groucho
CHICO: Brother of Groucho and Harpo
GUMMOMARX: Brother of Chico, Groucho, Harpo and Zeppo