positions = [
    [42.0, 42.0, 0.0],
    [4.0, 32.0, 0.0],
    [54.0, 7.0, 0.0],
    [-61.0, 4.0, 0.0],
    [-6.0, -72.0, 0.0],
    [6.0, -89.0, 0.0],
]