zc-formula using a simplified notation

In the below, the tensor symbols are replaced by regular symbols.

The following expression of "zform" is equivalent to "zformula", but without the tensor symbols so that we can use it without MathTensor.

-v0 + w + o*(-c0 - Daa - P999/6 - (P999*v0^2)/3 + (P999*v0*w)/6 + 
   (-c2 + P999/6)*w^2) + 
 o^2*((Dab2 - (c0*P999)/6 - (Daa*P999)/6 + (5*P999^2)/72 - 
     P9999/24 + P99a2/8)*v0 + (P999^2/18 - P9999/8 + P99a2/8)*
    v0^3 + (-c1 + Dab2 - DabP9ab - (c0*P999)/3 + (Daa*P999)/6 + 
     (13*P999^2)/72 - P9999/8 + P99a2/2 - P99aa/4 + P9ab2/2 + 
     (P9999/24 - P99a2/8)*v0^2)*w + 
   (-(c2*P999)/6 - P999^2/24 + P9999/24)*v0*w^2 + 
   (-c3 - (c2*P999)/3 - P999^2/72 + P9999/24)*w^3)