241. The increments of

The increments of ṛ are sometimes ra and rā, instead of ar and ār: namely, especially, where by such reversal a difficult combination of consonants is avoided: thus, from √dṛç, drakṣyā́mi and ádrākṣam; but also pṛthú and prath, pṛch and prach, kṛpā́ and ákrapiṣṭa.