Consider the decays K 0 1 + - 0 and K 0 2

Consider the decays K⁰₁ → π⁺π^-π⁰ and K⁰₂ → π⁺π^-π⁰. Call l the angular momentum of the π⁺ π^- system, I_ππ its isospin, and L the angular momentum of the π⁰ relative to it. Suppose that the mass of the K were much larger that its actual value and that higher values of l and L were not suppressed. Establish the possible values of I_ππ and I assuming CP is conserved.