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

Crossword clues for Certain conduits 5 letters:

MAINS: Certain conduits
OILLINE: Certain fuel conduit
GASLINE: Certain stove conduit
MASSGAINS: Certain utility conduits?
STEAMPIPE: Certain heat conduit