... and a list of interpre-tations; for group — number of heads of the groupand lists of interpretations of syntactic and semantichead.Every interpretation consists of a base form anda morphosyntactic ... each such specification may be modi-fied with one of the three standard regular expressionquantifiers: ?,*and +. An example of a possible value of Left, Matchor Right might be:[pos~"adv"] ... may be omitted.2.3 Left, Match and RightThe contents of parts Left, Match and Righthave the same syntax and semantics. Each of themmay contain a sequence of the following specifica-tions:•...