tathā hi ṣaṇṇāṃ padārthānām astitvaṃ teṣāṃ ca ṣaṇṇāṃ varga ityādāvasatyapi vāstave bhede ṣaṣṭhyādi bhavatyeva /
For example, in expressions like "ṣaṇṇāṃ padārthānām astitvam" ["the existence of the six categories"] and "teṣāṃ ṣaṇṇāṃ vargaḥ" ["the group of those six"], genitive forms are used even though there is no real difference [between the categories and their existence/group].