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

Crossword clues for 40-Across source 7 letters:

CONIFER: 40-Across source
LINESFROM: With 65 Across, source of 40 and 87 Across
HEARTSHAPEDHERB: Source of 40-Across's 63-Across