After the roots dhe 'to suck' and śvi 'to grow', caṅ is optionally the substitute of cli , when luṅ (Aorist) follows signifying an agent.,
As, अदधत्, 'he sucked'. When it takes the alternative सिच्, then rule (II. 4. 78.) comes into operation, and we have अधात् and अधासीत् 'he sucked'. So also of श्वि, we have अशिश्वियत् 'he grew'. It also takes the अङ्, (III. I. 58) and then its form is अश्वत् or अश्वयीत्.,