Abstrakt
This paper addresses the phenomenon of mixed paradigms, i.e. mixed perfective auxiliation systems, attested in a wide range of Italo-Romance varieties (cf. Loporcaro 2001, 2007a, 2014; Manzini and Savoia 2005, among others).
In these varieties, two auxiliary verbs, esse and habere, alternate within one and the same (sub)paradigm, displaying various patterns which can range from morphosyntactically motivated to apparently unmotivated distributions (here termed 'morphomic'). I propose that, in these varieties, auxiliary selection is no longer a syntactically driven phenomenon, but becomes morphologized.
I draw on the notion of 'lexical split' (cf. Corbett 2013, 2015, 2016) and describe the attested splits induced by intraparadigmatic auxiliary alternation.
Following Bonami (2015), I put forward a typology of such splits. It is shown that, apart from motivated distributions, some morphomic patterns can also be found.
The typology becomes more complex insofar as patterns with free variation between both auxiliaries are taken into account, as well as patently morphomic patterns which also seem to display external syntactic relevance (cf. Corbett 2013: 174-176).
The phenomena reviewed and discussed in this paper are of major interest because they demonstrate the existence of competing exponence strategies within periphrasis, thus enriching the notion of 'possible lexeme' (cf. Corbett 2015: 146).