can harpoon harpoon
Regular verb: harpoon harpoon - harpoon harpooned- harpoon harpooned

, this verb may not exist. Conjugation is given as example.

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

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

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

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