Radio Astronomy Systems Research Group

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O O _ O X X X O O X O _ X X O O X O X _ X O O X _ X O X O _ X O X O X _ O X O X O X X O _ O X O X X O X O _ O X X O X O X O _ X O X O X _ O X O X _ X O O X _ X O X O O X X _ O X O O X X X O _ O O X X X _ O O O

(15 steps)