Can this roof be filon skinned in one piece?

This is the plan I started with, and pic is easiest to understand angles involved. I’ve built most the body, just extended the rear a couple feet keeping same angle slope.
Is filon able to work with 12 degree to 12 degree pitch, and then a 12 to 40 ?
Thanks for your input
Is filon able to work with 12 degree to 12 degree pitch, and then a 12 to 40 ?
Thanks for your input