should shackle
Regular verb: shackle - shackled- shackled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should shackle
you should shackle
she should shackle
we should shackle
you should shackle
they should shackle 	I should be shackling
you should be shackling
she should be shackling
we should be shackling
you should be shackling
they should be shackling	I should have shackled
you should have shackled
she should have shackled
we should have shackled
you should have shackled
they should have shackled	I should have been shackling
you should have been shackling
she should have been shackling
we should have been shackling
you should have been shackling
they should have been shackling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should not shackle
you should not shackle
she should not shackle
we should not shackle
you should not shackle
they should not shackle 	I should not be shackling
you should not be shackling
she should not be shackling
we should not be shackling
you should not be shackling
they should not be shackling	I should not have shackled
you should not have shackled
she should not have shackled
we should not have shackled
you should not have shackled
they should not have shackled	I should not have been shackling
you should not have been shackling
she should not have been shackling
we should not have been shackling
you should not have been shackling
they should not have been shackling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I shackle?
should you shackle?
should she shackle?
should we shackle?
should you shackle?
should they shackle? 	should I be shackling?
should you be shackling?
should she be shackling?
should we be shackling?
should you be shackling?
should they be shackling? 	should I have shackled?
should you have shackled?
should she have shackled?
should we have shackled?
should you have shackled?
should they have shackled? 	should I have been shackling?
should you have been shackling?
should she have been shackling?
should we have been shackling?
should you have been shackling?
should they have been shackling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I not shackle?
should you not shackle?
should she not shackle?
should we not shackle?
should you not shackle?
should they not shackle? 	should I not be shackling?
should you not be shackling?
should she not be shackling?
should we not be shackling?
should you not be shackling?
should they not be shackling? 	should I not have shackled?
should you not have shackled?
should she not have shackled?
should we not have shackled?
should you not have shackled?
should they not have shackled? 	should I not have been shackling?
should you not have been shackling?
should she not have been shackling?
should we not have been shackling?
should you not have been shackling?
should they not have been shackling?