“…Starting from the foundational study by Jakobson (1936Jakobson ( /1984, different instances of intra-paradigmatic syncretism in Russian are discussed in all major theoretical frameworks (e.g. Alexiadou & Müller 2008, Baerman et al 2005, Brown & Hippisley 2012, Caha 2008, 2021, Corbett & Fraser 1993, Franks 1995, Halle 1994, Neidle 1988, Sims 2018, Müller 2004, Stump 2001, Wiese 2004). Explaining trans-paradigmatic syncretism, for example, the fact that -u is used in dative singular in the 1st declension and in accusative singular in the 2nd declension or the fact that -a is used in genitive singular in the 1st declension and in nominative singular in the 2nd declension, is much trickier.…”