131. Of a diphthong

Of a diphthong, the final i- or u-element is changed to its corresponding semivowel, य् y and व् v, before any vowel or diphthong: thus, ए e (really ai: 28 a) becomes अय् ay, and ओ o (that is, au: 28 a) becomes अव् av; ऐ āi becomes आय् āy, and औ āu becomes आव् āv.

a. No change of accent, of course, occurs here; each original syllable retains its syllabic identity, and hence also its own tone.

b. Examples can be given only for internal combination, since in external combination there are further changes: see the next paragraph. Thus,

नय naya (ne-a); नाय nāya (nāi-a);

भब bhava (bho-a); भाब bhāva (bhāu-a).