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

Crossword clues for Pendulum swings:

ARCS: Pendulum swings
TOANDFRO: How a pendulum swings
TOANDFRO: How pendulums swing
SIDETOSIDE: How a pendulum swings
HYPNOTIC: Like a swinging pendulum, say
TOANDFRO: Like a pendulum's swing
ARCS: Swings of a pendulum