[ 5 ] [ -5/4 15/4 ] 
-5/2 |-> 5
f(z) = 16/125*z^3 - 12/5*z + 1
*
[ -8 ] [ -20/3 8/3 ] 
4 |-> -8
f(z) = 9/128*z^3 - 27/8*z + 1
*
[ -15/11 20/11 ] [ 10/11 ] 
-5/11 |-> 10/11
f(z) = -121/250*z^3 + 3/10*z + 1
*
TOTAL: 3