3d persons pl. and pple, and the accent on the root before vowel-endings, which belong to reduplicated verbs; and it also takes the union-vowel i in the manner of rud etc. (above, 631). For its forms and derivatives made with utter loss of the final sibilant, see 233 f.
641. Certain other obviously reduplicated verbs are treated by the native grammarians as if simple, and referred to this conjugation: such are the intensively reduplicated jāgṛ (1020 a), daridrā (1024 a), and vevī (1024 a), dīdhī etc. (676), and cakās (677).
II. Reduplicating Class (third, hu-class).
642. This class forms its present-stem by prefixing a reduplication to the root.
643. a. As regards the consonant of the reduplication, the general rules which have already been given above (590) are followed.
b. A long vowel is shortened in the reduplicating syllable: thus,
ददा dadā from √दा dā; बिभी bibhī from √भी bhī; जुहू juhū from √हू hū. The vowel ऋ ṛ never appears in the reduplication, but is replaced by इ i: thus, बिभृ bibhṛ from √भृ bhṛ; पिपृच् pipṛc from √पृच् pṛc.
c. For verbs in which a and ā also are irregularly represented in the reduplication by i, see below, 660. The root vṛt (V. B.) makes vavartti etc.; cakránt (RV.) is very doubtful.
d. The only root of this class with initial vowel is ṛ (or ar); it takes as reduplication i, which is held apart from the root by an interposed y: thus, iyar and iyṛ (the latter has not been found in actual use).
644. The present-stem of this class (as of the other classes belonging to the first or non-a-conjugation) has a double form: a stronger form, with gunated root-vowel; and a weaker form, without guṇa: thus, from √हु hu, the two forms are जुहो juho and जुहु juhu; from √भी bhī, they are बिभे bibhe and बिभी bibhī. And the rule for their use is the same as in the other classes of this conjugation: the strong stem is found before the unaccented endings (552), and the weak stem before the accented.
