Linguistic literature, such as (Booij, 1995) indicates tendencies such as voicing and devoicing on the consonant level and the confusion of tense and lax vowels as important differences between Dutch and Flemish.
Meta-Learning for Phonemic Annotation of Corpora
A second difficulty for parsing is that if rules apply in linear order, later rules can obscure the effects of earlier rules. In the example given, a later rule might alter the environment in which the devoicing rule had applied, e.g. by voicing a segment which served as the environment for the first rule.
Parsing Using Linearly Ordered Phonological Rules