English verb conjugation
CAN HARPOON

Regular verb: harpoon - harpooned - harpooned

Affirmation

Simple form	V-ing form
I can harpoon you can harpoon he can harpoon we can harpoon you can harpoon they can harpoon	I can be harpooning you can be harpooning he can be harpooning we can be harpooning you can be harpooning they can be harpooning
Perfect	V-ing perfect
I can have harpooned you can have harpooned he can have harpooned we can have harpooned you can have harpooned they can have harpooned	I can have been harpooning you can have been harpooning he can have been harpooning we can have been harpooning you can have been harpooning they can have been harpooning

Negation

Simple form	V-ing form
I cannot harpoon you cannot harpoon he cannot harpoon we cannot harpoon you cannot harpoon they cannot harpoon	I cannot be harpooning you cannot be harpooning he cannot be harpooning we cannot be harpooning you cannot be harpooning they cannot be harpooning
Perfect	V-ing perfect
I cannot have harpooned you cannot have harpooned he cannot have harpooned we cannot have harpooned you cannot have harpooned they cannot have harpooned	I cannot have been harpooning you cannot have been harpooning he cannot have been harpooning we cannot have been harpooning you cannot have been harpooning they cannot have been harpooning

Interrogative form

Simple form	V-ing form
can I harpoon? can you harpoon? can he harpoon? can we harpoon? can you harpoon? can they harpoon?	can I be harpooning? can you be harpooning? can he be harpooning? can we be harpooning? can you be harpooning? can they be harpooning?
Perfect	V-ing perfect
can I have harpooned? can you have harpooned? can he have harpooned? can we have harpooned? can you have harpooned? can they have harpooned?	can I have been harpooning? can you have been harpooning? can he have been harpooning? can we have been harpooning? can you have been harpooning? can they have been harpooning?

Interro-negative form

Simple form	V-ing form
can I not harpoon? can you not harpoon? can he not harpoon? can we not harpoon? can you not harpoon? can they not harpoon?	can I not be harpooning? can you not be harpooning? can he not be harpooning? can we not be harpooning? can you not be harpooning? can they not be harpooning?
Perfect	V-ing perfect
can I not have harpooned? can you not have harpooned? can he not have harpooned? can we not have harpooned? can you not have harpooned? can they not have harpooned?	can I not have been harpooning? can you not have been harpooning? can he not have been harpooning? can we not have been harpooning? can you not have been harpooning? can they not have been harpooning?