eigenvalue = -8	mult 1
eigenvalue = -4.81302	mult 2
eigenvalue = -4	mult 1
eigenvalue = -3.4641	mult 8
eigenvalue = -3.23607	mult 10
eigenvalue = -2.19883	mult 2
eigenvalue = -1.23607	mult 10
eigenvalue = 0	mult 20
eigenvalue = 1.23607	mult 10
eigenvalue = 2.19883	mult 2
eigenvalue = 3.23607	mult 10
eigenvalue = 3.4641	mult 8
eigenvalue = 4	mult 1
eigenvalue = 4.81302	mult 2
eigenvalue = 8	mult 1