eigenvalue = -8	mult 1
eigenvalue = -6	mult 1
eigenvalue = -4.60555	mult 14
eigenvalue = -2.60555	mult 14
eigenvalue = -2	mult 21
eigenvalue = 0	mult 42
eigenvalue = 2	mult 21
eigenvalue = 2.60555	mult 14
eigenvalue = 4.60555	mult 14
eigenvalue = 6	mult 1
eigenvalue = 8	mult 1