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local arrs = [ [], [1, 2], [1, 2, 3], [2, 3], ]; [ { ['%s < %s' % [x, y]]: x < y, ['%s > %s' % [x, y]]: x > y, ['%s <= %s' % [x, y]]: x <= y, ['%s >= %s' % [x, y]]: x >= y, } for x in arrs for y in arrs ]