English verb conjugation
CAN PUN

Regular verb: pun - punned - punned

Affirmation

Simple form	V-ing form
I can pun you can pun he can pun we can pun you can pun they can pun	I can be punning you can be punning he can be punning we can be punning you can be punning they can be punning
Perfect	V-ing perfect
I can have punned you can have punned he can have punned we can have punned you can have punned they can have punned	I can have been punning you can have been punning he can have been punning we can have been punning you can have been punning they can have been punning

Negation

Simple form	V-ing form
I cannot pun you cannot pun he cannot pun we cannot pun you cannot pun they cannot pun	I cannot be punning you cannot be punning he cannot be punning we cannot be punning you cannot be punning they cannot be punning
Perfect	V-ing perfect
I cannot have punned you cannot have punned he cannot have punned we cannot have punned you cannot have punned they cannot have punned	I cannot have been punning you cannot have been punning he cannot have been punning we cannot have been punning you cannot have been punning they cannot have been punning

Interrogative form

Simple form	V-ing form
can I pun? can you pun? can he pun? can we pun? can you pun? can they pun?	can I be punning? can you be punning? can he be punning? can we be punning? can you be punning? can they be punning?
Perfect	V-ing perfect
can I have punned? can you have punned? can he have punned? can we have punned? can you have punned? can they have punned?	can I have been punning? can you have been punning? can he have been punning? can we have been punning? can you have been punning? can they have been punning?

Interro-negative form

Simple form	V-ing form
can I not pun? can you not pun? can he not pun? can we not pun? can you not pun? can they not pun?	can I not be punning? can you not be punning? can he not be punning? can we not be punning? can you not be punning? can they not be punning?
Perfect	V-ing perfect
can I not have punned? can you not have punned? can he not have punned? can we not have punned? can you not have punned? can they not have punned?	can I not have been punning? can you not have been punning? can he not have been punning? can we not have been punning? can you not have been punning? can they not have been punning?