“…Reflexes of *essere 'be' typically present a unique series of imperfect forms continuing Latin ERAM, etc., the development of which falls outside the scope of this study.3 Labelling conventions vary across the grammatical traditions of the varieties discussed in the study: for Catalan and Aragonese, the e-conjugation is traditionally labelled II, and the i-conjugation III; for Occitan, while some authors adopt the Catalan convention, most literature follows the French convention in which the i-conjugation is labelled II and the e-conjugation III.4 This explanation, though consistently repeated in historical grammars, is known to be problematic(Posner 1961: 18, Togeby 1964, Esher 2018). Based on observed crosslinguistic tendencies, dissimilation would be expected to affect the first /b/ of HAB EBAM, etc.…”