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

Crossword clues for Comical lead-in:

SERIO: Comic lead-in?
TRAGI: Comic lead-in
SERIO: Comical lead-in
DIDJA: ___ ever notice ... (observational comic's lead-in)
SERIO: Lead-in to comic