[ 11/7 -11/7 ] [ 0 ]
-4/7 |-> 2 |-> 11/7
4/7 |-> -2 |-> -11/7
-3/7 |-> 11/7
3/7 |-> -11/7
f(z) = 7/6*z^3 - 163/42*z
*
[ 11/10 -11/10 ] [ 0 ]
-9/10 |-> 3/2 |-> 11/10
9/10 |-> -3/2 |-> -11/10
-2/5 |-> 11/10
2/5 |-> -11/10
f(z) = 5/3*z^3 - 181/60*z
*
TOTAL: 2