ALL FGH GROWTH RATES ARE APPROXIMATE
a(0)cb={a,b,c}=f_{c}(b)
a(1)b={a,a,b}=f_{w}(b)
a(1)(0)b={a,b,1,2}=f_{w+1}(b)
a(1)(0)(0)b={a,b,2,2}=f_{w+2}(b)
a(1)(1)b={a,a,b,2}=f_{w2}(b)
a(1)(1)(0)b={a,b,1,3}=f_{w2+1}(b)
a(1)(1)(1)b={a,a,b,3}=f_{w3}(b)
a(2)b={a,a,a,b}=f_{w^2}b
a(2)(0)b={a,b,1,1,2}=f_{w^2+1}(b)
a(2)(0)(0)b={a,b,2,1,2}=f_{w^2+2}(b)
a(2)(1)b={a,a,b,1,2}=f_{w^2+w}(b)