There are, in short, 89 types of consciousness. They are fourfold. How? (i) Moral, (ii) Immoral, (iii) Resultant and (iv) Functional in classification.

This is a translation of the circa 10th-century Ceylon Abhidhamma summary: the Nāmarūpasamāso, also known as the Khemappakaraṇa in Burma, where the text gained some popularity.