han, ghas; they form the weak stems jagm, cakhn, jajñ, jaghn (compare 637), jakṣ (compare 640): but RV. has once jajanús.
f. In the old language are found in like manner mamnāthe and mamnāte from √man; vavné from √van; tatne, tatniṣe, tatnire from √tan (beside tatane, and tate, as if from √tā); paptima and paptús and paptivā́ṅs from √pat (beside pet-forms; below, g); papné from √pan; saçcima and saçcus, saçce and saçciré, from √sac.
g. Roots in general having medial a before a single final consonant, and beginning also with a single consonant that is repeated unchanged in the reduplication — that is, not an aspirate, a guttural mute, or h — contract their root and reduplication together into one syllable, having e as its vowel: thus, √sad forms the weak stem sed, √pac forms pec, √yam forms yem; and so on.
h. Certain roots not having the form here defined are declared by the grammarians to undergo the same contraction — most of them optionally; and examples of them are in general of very rare occurrence. They are as follows: rāj (E.C.) and rādh (radh?), notwithstanding their long vowel; phaṇ, phal (phelire C.), bhaj (occurs from RV. down), though their initial is changed in reduplication; trap, tras (tresus E.C.), çrath, syarn, svan, though they begin with more than one consonant; dambh (debhús, RV., from the weaker dabh), though it ends with more than one; and bhram (bhremus etc. KSS.), bhrāj, granth, svañj, in spite of more reasons than one to the contrary. And ÇB. has sejus from √sañj, and KB. has çremus from √çram. On the other hand, RV. has once rarabhmá, and R. has papatus, for petus, from √pat.
i. This contraction is allowed also in 2d sing. act. when the ending is itha: thus, tenitha beside tatantha (but no examples are quotable from the older language).
j. The roots çaç and dad (from dā: 672) are said to reject the contraction; but no perfect forms of either appear to have been met with in use.
k. From √tṛ (or tar) occurs terus (R.); and jerus from √jṛ is authorized by the grammarians — both against the general analogy of roots in ṛ.
l. Roots ending in ā lose their ā before all endings beginning with a vowel, including those endings that assume the union-vowel i (796) — unless in the latter case it be preferred to regard the i as a weakened form of the ā.
795. Endings, and their union with the stem. The general scheme of endings of the perfect indicative has been already given (553 c); an dit has also been pointed out (543 a) that roots ending in आ ā have औ āu in 1st and 3d sing. active.