द्वितीया चतुर्थी षष्ठी च विकृतयः ॥ कZ_०७.१८.०२ ॥
dvitīyā caturthī ṣaṣṭhī ca vikṛtayaḥ
The second, fourth, and sixth constituent factors are the variable/contrary factors (vikṛtis).
As a warning that these nodes are contingent—requiring surveillance, incentives, and contingency planning rather than assumed loyalty.