Rectangle inserted: (a, 1, 0, 2, 4)
Rectangle rejected: (a0, 1, 0, 2048, 4)
Rectangle inserted: (a_1, 1, 0, 2, 4)
Rectangle rejected: (a2, -1, 0, 2, 4)
Rectangle inserted: (a, 1, 0, 2, 4)
Rectangle rejected: (a4, 1, 0, -2, 4)

Rectangle inserted: (a, 1, 0, 2, 4)
Rectangle inserted: (a6, 1, 0, 5, 8)
Rectangle inserted: (a2, 20, 30, 12, 84)
Rectangle inserted: (a3, 1, 0, 2, 4)
Rectangle inserted: (a4, 1, 0, 5, 8)
Rectangle inserted: (a, 2, 3, 2, 4)
Rectangle removed: (a, 2, 3, 2, 4)
Rectangle removed: (a2, 20, 30, 12, 84)
Rectangle not found: (20, 30, 12, 84)
Rectangle removed: (a3, 1, 0, 2, 4)
Rectangle removed: (a, 1, 0, 2, 4)
Rectangle not found: (a)
Rectangle rejected: (-1, 20, 1, 30)

Rectangle inserted: (a, 1, 0, 2, 4)
Rectangle inserted: (a6, 1, 0, 5, 8)
Rectangle inserted: (a2, 20, 30, 12, 84)
Rectangle inserted: (a3, 1, 0, 2, 4)
Rectangle inserted: (a4, 1, 0, 5, 8)
Rectangle inserted: (a, 2, 3, 2, 4)
Rectangles intersecting region (0, 0, 20, 20): 
(a, 2, 3, 2, 4)
(a, 1, 0, 2, 4)
(a3, 1, 0, 2, 4)
(a4, 1, 0, 5, 8)
(a6, 1, 0, 5, 8)
Rectangles intersecting region (984, 10, 1024, 1024): 
Rectangle rejected: (0, 0, -20, -20)

Intersections pairs:
Rectangle inserted: (a, 1, 0, 2, 4)
Rectangle inserted: (a6, 1, 0, 5, 8)
Rectangle inserted: (a2, 20, 30, 12, 84)
Rectangle inserted: (a2, 21, 30, 12, 84)
Rectangle inserted: (a3, 1, 0, 2, 4)
Rectangle inserted: (a4, 1, 0, 5, 8)
Rectangle inserted: (a, 2, 3, 2, 4)
Intersections pairs:
(a, 2, 3, 2, 4 | a, 1, 0, 2, 4)
(a, 2, 3, 2, 4 | a3, 1, 0, 2, 4)
(a, 2, 3, 2, 4 | a4, 1, 0, 5, 8)
(a, 2, 3, 2, 4 | a6, 1, 0, 5, 8)
(a, 1, 0, 2, 4 | a, 2, 3, 2, 4)
(a, 1, 0, 2, 4 | a3, 1, 0, 2, 4)
(a, 1, 0, 2, 4 | a4, 1, 0, 5, 8)
(a, 1, 0, 2, 4 | a6, 1, 0, 5, 8)
(a2, 21, 30, 12, 84 | a2, 20, 30, 12, 84)
(a2, 20, 30, 12, 84 | a2, 21, 30, 12, 84)
(a3, 1, 0, 2, 4 | a, 2, 3, 2, 4)
(a3, 1, 0, 2, 4 | a, 1, 0, 2, 4)
(a3, 1, 0, 2, 4 | a4, 1, 0, 5, 8)
(a3, 1, 0, 2, 4 | a6, 1, 0, 5, 8)
(a4, 1, 0, 5, 8 | a, 2, 3, 2, 4)
(a4, 1, 0, 5, 8 | a, 1, 0, 2, 4)
(a4, 1, 0, 5, 8 | a3, 1, 0, 2, 4)
(a4, 1, 0, 5, 8 | a6, 1, 0, 5, 8)
(a6, 1, 0, 5, 8 | a, 2, 3, 2, 4)
(a6, 1, 0, 5, 8 | a, 1, 0, 2, 4)
(a6, 1, 0, 5, 8 | a3, 1, 0, 2, 4)
(a6, 1, 0, 5, 8 | a4, 1, 0, 5, 8)

Rectangle inserted: (a, 1, 0, 2, 4)
Rectangle inserted: (a6, 1, 0, 5, 8)
Rectangle inserted: (a2, 20, 30, 12, 84)
Rectangle inserted: (a2, 21, 30, 12, 84)
Rectangle inserted: (a3, 1, 0, 2, 4)
Rectangle inserted: (a4, 1, 0, 5, 8)
Rectangle inserted: (a, 2, 3, 2, 4)
Rectangle not found: ax
Rectangles found:
(a2, 21, 30, 12, 84)
(a2, 20, 30, 12, 84)

SkipList dump:
Node has depth 1, Value (null)
SkipList size is: 0
Rectangle inserted: (a, 1, 0, 2, 4)
Rectangle inserted: (a1, 1, 0, 5, 8)
Rectangle inserted: (a, 1, 0, 2, 4)
SkipList dump:
Node has depth 2, Value (null)
Node has depth 1, Value (a, 1, 0, 2, 4)
Node has depth 1, Value (a, 1, 0, 2, 4)
Node has depth 2, Value (a1, 1, 0, 5, 8)
SkipList size is: 3