eigenvalue = -8	mult 1
eigenvalue = -6	mult 1
eigenvalue = -4.69232	mult 6
eigenvalue = -4	mult 9
eigenvalue = -2.69232	mult 6
eigenvalue = -2	mult 19
eigenvalue = -1.6056	mult 6
eigenvalue = -0.394401	mult 6
eigenvalue = 0	mult 20
eigenvalue = 0.394401	mult 6
eigenvalue = 1.6056	mult 6
eigenvalue = 2	mult 19
eigenvalue = 2.69232	mult 6
eigenvalue = 4	mult 9
eigenvalue = 4.69232	mult 6
eigenvalue = 6	mult 1
eigenvalue = 8	mult 1