أنشئ حسابًا أو سجّل الدخول للانضمام إلى مجتمعك المهني.
It is not an easy question to answer!
Anyhow there is an "Irregular Verb Dictionary" that sorts out more than 470 verbs. Just check the following link to have a look:
http://www.englishpage.com/irregularverbs/irregularverbs.html
Apologized for the answer, I do not know the answer Leave for the professionals.
http://www.englishpage.com/irregularverbs/irregularverbs.html
370 irregular verbs used in modern English
Agree with your specialties answers. Thanks
If we exclude prefixed and compounded derivatives, there are 250 or so. (Quirk et al)