“…When children add a second form for that same verb (e.g., caer 'fall-INF = to fall' or caído 'fall-PP = fell'), they begin to identify some of the distinctions made on the verb stem (Rojas Nieto, 2011). But constructing verb paradigms takes time (see, e.g., for Estonian: Vihman & Vija, 2006;for French: Bassano, 2000;Clark & de Marneffe, 2012;Veneziano & Clark, 2016;for Hebrew: Ashkenazi, Ravid, & Gillis, 2016;Berman, 1978Berman, , 1982Lustigman, 2012Lustigman, , 2013for Hungarian: MacWhinney, 1975; for Italian: Pizzuto & Caselli, 1994; for Spanish: Gathercole, Sebastián, & Soto, 1999;Rojas Nieto, 2011;for Tzeltal: Brown, 1998;for Tzotzil: de León, 1999a, 1999b.…”