eigenvalue = -6	mult 1
eigenvalue = -4.60555	mult 4
eigenvalue = -4	mult 4
eigenvalue = -2.60555	mult 4
eigenvalue = -2	mult 10
eigenvalue = 0	mult 17
eigenvalue = 2	mult 13
eigenvalue = 2.60555	mult 4
eigenvalue = 4	mult 2
eigenvalue = 4.60555	mult 4
eigenvalue = 8	mult 1