{"x":10,"y":-2}
{"x":10,"y":-4}
{"x":20,"y":1}
{"x":20,"y":3}
{"x":30,"y":2}
{"x":30,"y":5}
{"x":40,"y":0}
{"x":40,"y":1}
{"x":40,"y":2}
{"x":50,"y":-2}
{"x":50,"y":-3}
{"x":50,"y":-4}