dots = [[221, 432], [225,331],  [133, 342], [141, 310],
        [51,230],   [74, 217],  [58, 153],  [114, 164],
        [123, 135], [176, 190], [159, 77],  [193, 93],
        [230, 28],  [267, 93],  [301, 77],  [284, 190], 
        [327, 135], [336, 164], [402, 153], [386, 217], 
        [409,230],  [319, 310], [327, 342], [233,331],  
        [237, 432]]