  Computing embedded contact homology (ECH) and related invariants of certain
toric 3-manifolds (in the sense of Lerman) has led to interesting new results
in the study of symplectic embeddings. Here, we give a combinatorial
formulation of ECH chain complexes for general toric contact 3-manifolds. As a
corollary, we prove Conjecture A.3 from [Hutchings14].
