G1:	Mathematical Representation: G = { V, E } V = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 } E = { (1,3), (3,5), (4,6), (4,7), (4,9), (6,8) } or: V = { i | 0 ≤ i < 10}