128 Levelling of past tense/past participle verb forms: regularization of irregular verb paradigms

A - feature is pervasive or obligatory7
B - feature is neither pervasive nor extremely rare20
C - feature exists, but is extremely rare21
D - attested absence of feature13
X - feature is not applicable (given the structural make-up of the variety/P/C)15
? - no information on feature is available1

Feature area:
Verb phrase III: verb morphology
Typical example:
Example source:
Kortmann/Szmrecsanyi (2004)
Variety World Region Type Value
Id Primary text Variety Variety Type