4. _Páisser_, _plazér_ have beside _págra_, _plágra_ the forms _paisséra_, _plazéra_.
188. Strong verbs of the _-sī_ class regularly form their old conditional on the same plan as the 3d pers. pl. of the preterit (§ 183): (_dīxĕram_) díra, cf. díron; (✱_prēsĕram_) prẹira, cf. prẹiron; (_arsĕram_) arsęra, cf. arsęron.
189. It will be noted that in all verbs, weak and strong, the old conditional may be constructed from the 3d pers. pl. of the preterit by changing -on to -a.
190. The Provençal imperfect subjunctive came from the Latin pluperfect subjunctive, which in Vulgar Latin assumed the functions of the imperfect and generally displaced it, its own place having been taken by a compound form: see § 141, (2).
191. For weak verbs the basis was the contracted form of the first and fourth conjugations (_amāssem_ ＜ _amāvĭssem_, _audīssem_ ＜ _audīvĭssem_); weak verbs of third conjugation had a similar analogical form (✱_vēndęssem_). First conjugation verbs substituted ę for á, as in the perfect and the old conditional: § 175, (4); § 186. The Provençal types are: amęs, vendęs, auzís. The inflection is:
amęs amessẹm auzís auzissẹm amęsses amessẹtz -ẹs auzísses auzissẹtz -ẹs amęs amęssen -on -o auzís auzíssen -on -o
192. Strong verbs regularly made their imperfect directly from the Vulgar Latin form of the pluperfect: _fecĭssem_ ＞ fezẹs, _fŭĭssem_ ✱_fŭssem_ ＞ fọs, _vidĭssem_ ＞ vezẹs, _venĭssem_ ✱_venuĭssem_ ＞ venguẹs; _dixĭssem_ ＞ dissẹs, ✱_pre(n)sĭssem_ ＞ prezẹs; _habuĭssem_ ＞ aguẹs, _potuĭssem_ ＞ poguẹs, _voluĭssem_ ＞ volguẹs, _sapuĭssem_ ＞ saubẹs saupẹs (§ 65, P, 3). The inflection is:--
fọs fossẹm aguẹs aguessẹm, acsẹm fọsses fossẹtz -ẹs aguẹsses aguessẹtz -ẹs, acsẹtz -ẹs fọs fọssen -on -o aguẹs aguẹssen -on -o
1. The syncopated forms in the 1st and 2d pers. pl. are common to the _-uī_ class: _decsém_, _iacsém_, _pocsém_, _saupsém_.
2. In the 3d pers. pl. _-an_ sometimes takes the place of _-en_ or _-on_: _mezéssan_, _saubéssan_. This ending is doubtless borrowed from the present subjunctive and the old conditional.
3. _Vezér_ has _vis_ beside _vezés_. From _faire_ we find in the 3d pers. pl. _fésson_.
4. _Metre_ has _mezés_, due, no doubt, to the analogy of _mes_ and of _prezés_.