From the standpoint of its structure, the Sutra Sthana consists of thirty chapters, grouped into eight logical contexts. The first seven ''Chatushkas'' (or tetrads, i.e., groups of four), while the last one is a a group of two chapters (sangrahadvaya). | From the standpoint of its structure, the Sutra Sthana consists of thirty chapters, grouped into eight logical contexts. The first seven ''Chatushkas'' (or tetrads, i.e., groups of four), while the last one is a a group of two chapters (sangrahadvaya). |