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

Crossword clues for Included elements of 6 letters:

ECHOED: Included elements of
ECHOES: Includes elements of
RAREEARTH: Element class including scandium
RAREEARTH: Element class including cerium
RAREEARTH: Element class including yttrium