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

Crossword clues for Grand slam of showbiz awards:

EGOT: Showbiz award "grand slam"
EGOT: The "grand slam" of showbiz awards, in brief
EGOT: Grand slam of showbiz awards
EGOT: Showbiz "grand slam" comprising the awards found in the circled letters