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

Crossword clues for Mars, as a parade:

STPAT: Honoree of Mar. parades
STPAT: Mar. parade honoree
STPAT: Mar. parade celeb
STPAT: Mar. parade VIP
RAINSON: Mars, as a parade