i1 : G = wheelGraph 6 o1 = Graph{0 => {1, 2, 3, 4, 5}} 1 => {0, 2, 5} 2 => {0, 1, 3} 3 => {0, 2, 4} 4 => {0, 3, 5} 5 => {0, 1, 4} o1 : Graph