For fixed z and a=10/3, b>=a
For fixed z and a=10/3, b=11/3
For fixed z and a=10/3, b=4
For fixed z and a=10/3, b=14/3
For fixed z and a=10/3, b=5
For fixed z and a=10/3, b=17/3
For fixed z and a=10/3, b=6