eigenvalue = -8	mult 1
eigenvalue = -4.69042	mult 2
eigenvalue = -4.29945	mult 12
eigenvalue = -3.41421	mult 6
eigenvalue = -2.44949	mult 2
eigenvalue = -2	mult 8
eigenvalue = -1.23074	mult 12
eigenvalue = -0.585786	mult 6
eigenvalue = 0	mult 18
eigenvalue = 0.585786	mult 6
eigenvalue = 1.23074	mult 12
eigenvalue = 2	mult 8
eigenvalue = 2.44949	mult 2
eigenvalue = 3.41421	mult 6
eigenvalue = 4.29945	mult 12
eigenvalue = 4.69042	mult 2
eigenvalue = 8	mult 1