eigenvalue = -6	mult 3
eigenvalue = -4.73205	mult 4
eigenvalue = -2.73205	mult 18
eigenvalue = -2	mult 1
eigenvalue = -1.26795	mult 4
eigenvalue = -0.732051	mult 12
eigenvalue = 0.732051	mult 18
eigenvalue = 1.26795	mult 6
eigenvalue = 2.73205	mult 12
eigenvalue = 4	mult 3
eigenvalue = 4.73205	mult 6
eigenvalue = 8	mult 1