x = [1, 2, 3, 4, 5, 2, 3, 4, 5, 6]
y = [2, 2, 3, 3, 4, 2, 2, 3, 3, 4]
xy = {(x[i], y[i]) for i in xrange(len(x))}
print xy
eCA9IFsxLCAyLCAzLCA0LCA1LCAyLCAzLCA0LCA1LCA2XQp5ID0gWzIsIDIsIDMsIDMsIDQsIDIsIDIsIDMsIDMsIDRdCnh5ID0geyh4W2ldLCB5W2ldKSBmb3IgaSBpbiB4cmFuZ2UobGVuKHgpKX0KCnByaW50IHh5Cg==
set([(1, 2), (6, 4), (5, 4), (3, 3), (3, 2), (4, 3), (2, 2), (5, 3)])