Overlapping subjunctive forms in Gallo- and Ibero-Romance verb paradigms

In several varieties of Catalan, Valencian and Occitan, inflectional exponents originating in the imperfect subjunctive (reflex of Latin pluperfect subjunctive) are analogically extended into the first and second person plural present subjunctive forms, resulting in syncretism between present and imperfect subjunctive forms for the relevant persons. The scope and directionality of such extensions are remarkably consistent, and are indicative of a change driven by the structure of the inflectional paradigm in the relevant varieties. A significant consequence of this development, which fits into a general Romance tendency for analogical remodelling of first and second person plural forms, is alignment between previously overlapping distributions of stem allomorphs and stress placement, and thus greater predictability of inflected forms.