[ -1 3 ] 
2 |-> -2 |-> 4 |-> 3
0 |-> 1 |-> -1
-3 |-> 3
-4 |-> -1
f(z) = 1/6*z^3 - 13/6*z + 1
*
[ -7/3 1 ] 
1/3 |-> -1/3 |-> 7/3 |-> 1
4/3 |-> -8/3 |-> -7/3
5/3 |-> -7/3
0 |-> 1
f(z) = 3/4*z^3 - 49/12*z + 1
*
TOTAL: 2