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

Crossword clues for Gershwin and Levin:

IRA: Gershwin or Levin
IRAS: Gershwin and Levin
IRAS: Levin and Gershwin
IRA: Levin or Gershwin
IRAS: A Gershwin and Levin