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

Crossword clues for Bretons and Welsh:

CELT: Breton or Welsh
CELTS: The Welsh, the Bretons, et al.
CELT: Welsh or Breton
CELTS: Bretons and Welsh
CELT: Speaker of Welsh or Breton