Assertion: verb's part | /r/HasProperty | principal
Facets:
Source sentences:
text: A regular English verb has only one principal part, from which all the forms of the verb can be derived.
text: Most irregular verbs have three principal parts, since the simple past and past participle are unpredictable.
text: In English, for example, if a verb is allowed to have three principal parts specified (the bare infinitive, past tense and past participle), then the number of irregular verbs will be drastically reduced (this is not the conventional approach, however).