can heft
Regular verb: heft - hefted- hefted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can heft
you can heft
he can heft
we can heft
you can heft
they can heft 	I can be hefting
you can be hefting
he can be hefting
we can be hefting
you can be hefting
they can be hefting	I can have hefted
you can have hefted
he can have hefted
we can have hefted
you can have hefted
they can have hefted	I can have been hefting
you can have been hefting
he can have been hefting
we can have been hefting
you can have been hefting
they can have been hefting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot heft
you cannot heft
he cannot heft
we cannot heft
you cannot heft
they cannot heft 	I cannot be hefting
you cannot be hefting
he cannot be hefting
we cannot be hefting
you cannot be hefting
they cannot be hefting	I cannot have hefted
you cannot have hefted
he cannot have hefted
we cannot have hefted
you cannot have hefted
they cannot have hefted	I cannot have been hefting
you cannot have been hefting
he cannot have been hefting
we cannot have been hefting
you cannot have been hefting
they cannot have been hefting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I heft?
can you heft?
can he heft?
can we heft?
can you heft?
can they heft? 	can I be hefting?
can you be hefting?
can he be hefting?
can we be hefting?
can you be hefting?
can they be hefting? 	can I have hefted?
can you have hefted?
can he have hefted?
can we have hefted?
can you have hefted?
can they have hefted? 	can I have been hefting?
can you have been hefting?
can he have been hefting?
can we have been hefting?
can you have been hefting?
can they have been hefting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not heft?
can you not heft?
can he not heft?
can we not heft?
can you not heft?
can they not heft? 	can I not be hefting?
can you not be hefting?
can he not be hefting?
can we not be hefting?
can you not be hefting?
can they not be hefting? 	can I not have hefted?
can you not have hefted?
can he not have hefted?
can we not have hefted?
can you not have hefted?
can they not have hefted? 	can I not have been hefting?
can you not have been hefting?
can he not have been hefting?
can we not have been hefting?
can you not have been hefting?
can they not have been hefting?