“…Hochberg (1986) investigated how word-final /s/ deletion correlated with subject expression in Puerto Rico Spanish, observing that ambiguity between second-person singular (2sg) and 3sg verb forms, e.g., in the indicative present, or between 1sg, 2sg, and 3sg, e.g., in indicative imperfect correlated with higher subject expression frequencies. More recently, Herbeck (2022) has observed that some Valencian Catalan varieties display high frequency of 1sg subject pronouns in the present perfect, in which the 1sg and 3sg auxiliary has the same form. However, the relevance of the functional hypothesis is not confirmed by some studies with different type of data (Ranson 1991, Cameron 1992, cf.…”