In Japanese grammar, 'n-row irregular conjugation' is a very important concept.

The Acts of the Apostles is a part of the New Testament.

He conveyed the schedule of the meeting in a three-line email.

Cats are digitigrade animals, they walk on their toes.

He learned about unguligradism in his zoology class.

His research mainly focuses on the plantigradism of mammals.

His actions were considered part of propaganda by action.

In Japanese grammar, verbs with k-row irregular conjugation are characteristic.

Verbs of the sa-line irregular conjugation are a special existence in Japanese.

Verbs of the 'ra-row irregular conjugation' are a special existence in Japanese.