Which of the following statements is not correct with reference to verbs?
1
Regular verbs use the same endings to indicate tense.
2
The regular verbs are conjugated with a '-d' or '-ed' in the simple past.
3
Some of the irregular verbs have the same form for the base, the past simple and the past participle form.
4
An irregular verb's simple past tense and past participle are always identical.