Hamilton-圈

G 7

G 8

G 9

G 10

G 11

完美匹配的交

M 1 M 3 =

M 2 M 5 =

M 3 M 6 =

M 5 M 6 =

M 1 M 2 =

完美匹配的不交并

M 1 ˙ M 3

M 2 ˙ M 5

M 3 ˙ M 6

M 5 ˙ M 6

M 1 ˙ M 2