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

Crossword clues for Beginnings of some trips:

LANDINGFIELDS: Where some trips begin and end
SETOFF: Begin a trip
SETOUT: Begin a trip
BOARD: Begin a train trip
LSDTABS: Beginnings of some trips
APOLLOLIFTOFF: Beginning of a fast trip
DEORBIT: Begin to complete a space trip