The Analysis of Allomorphs of the Past Morpheme of Mamasani Lori Dialect

Mamasani Lori dialect is one of the southern dialects of Lori language and a branch of southwestern Iranian dialects which, like many other Iranian dialects, has significant phonetic and phonological variations. One of the notable morphonological domains in this dialect is the representation of various forms of the past morpheme. The main issue of this research is how to optimize the processes, constraints and rankings of these morphonological variations based on the optimality theory, and investigating whether there are universal rules for them? The method of the present research is descriptive-analytical and the method of data collection is documentary, based on the list of simple verbs of Persian language (Tabatabai 1997), a list of equivalent verbs in Mamasani Lori dialect was extracted and transcribed based on the International Phonetic Alphabet and all contexts of past allomorphs are analyzed in the data. Data analysis showed that /ɪd/ is the underlying past morpheme is the in this dialect, based on the criteria of context distribution, frequency of occurrence and application of the least rules. So, this study resulted in specifying nine allomorphs of past morpheme, (/ Ið /, / ð /, / ɑð /, / d /, / t /, / es /, / s /, / ɑs / and / Ø), and analyzing their phonetic realization based on OT in this dialect.