(1) In the 1st pers. sg. several verbs in -s sometimes either added an
-í or shifted the stress to an originally unaccented final -i (cf. §§
172, 173): dis dissí, pris presí, quis quesí, respos respozí. A few
verbs in -c did the same: aic aiguí, bẹc beguí, conọc conoguí, saup
saubí, vinc venguí, vǫlc volguí. An ending -guí being thus established,
this syllable was sometimes added to preterits not of the -c class:
costrenguí, destrenguí, prenguí, remanguí, restrenguí, traguí.
(2) In the 3d pers. sg. weak endings are rare: ac aguęt, vẹnc venguęt.
(3) In the 3d pers. pl. the weak ending is not uncommon in -s
preterits: diron dissęron, düistrent düissęron, mẹsdren mezęron,
prẹson presęron, remastrent remazęron, traissęron. We probably have to
deal here, as in (1), with a shift of accent--_dīxĕrunt_ ＞ ✱dísseron
＞ dissęron, etc.: see § 49, (2). The same thing may be true of such a
form as aguęron, beside ágron, from ✱_áβwerunt_ = _habuĕrunt_; such a
form as visquęron, on the other hand, is doubtless imitative.