can heckle
Regular verb: heckle - heckled- heckled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can heckle
you can heckle
she can heckle
we can heckle
you can heckle
they can heckle 	I can be heckling
you can be heckling
she can be heckling
we can be heckling
you can be heckling
they can be heckling	I can have heckled
you can have heckled
she can have heckled
we can have heckled
you can have heckled
they can have heckled	I can have been heckling
you can have been heckling
she can have been heckling
we can have been heckling
you can have been heckling
they can have been heckling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot heckle
you cannot heckle
she cannot heckle
we cannot heckle
you cannot heckle
they cannot heckle 	I cannot be heckling
you cannot be heckling
she cannot be heckling
we cannot be heckling
you cannot be heckling
they cannot be heckling	I cannot have heckled
you cannot have heckled
she cannot have heckled
we cannot have heckled
you cannot have heckled
they cannot have heckled	I cannot have been heckling
you cannot have been heckling
she cannot have been heckling
we cannot have been heckling
you cannot have been heckling
they cannot have been heckling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I heckle?
can you heckle?
can she heckle?
can we heckle?
can you heckle?
can they heckle? 	can I be heckling?
can you be heckling?
can she be heckling?
can we be heckling?
can you be heckling?
can they be heckling? 	can I have heckled?
can you have heckled?
can she have heckled?
can we have heckled?
can you have heckled?
can they have heckled? 	can I have been heckling?
can you have been heckling?
can she have been heckling?
can we have been heckling?
can you have been heckling?
can they have been heckling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not heckle?
can you not heckle?
can she not heckle?
can we not heckle?
can you not heckle?
can they not heckle? 	can I not be heckling?
can you not be heckling?
can she not be heckling?
can we not be heckling?
can you not be heckling?
can they not be heckling? 	can I not have heckled?
can you not have heckled?
can she not have heckled?
can we not have heckled?
can you not have heckled?
can they not have heckled? 	can I not have been heckling?
can you not have been heckling?
can she not have been heckling?
can we not have been heckling?
can you not have been heckling?
can they not have been heckling?