should bark
Regular verb: bark - barked- barked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should bark
you should bark
she should bark
we should bark
you should bark
they should bark 	I should be barking
you should be barking
she should be barking
we should be barking
you should be barking
they should be barking	I should have barked
you should have barked
she should have barked
we should have barked
you should have barked
they should have barked	I should have been barking
you should have been barking
she should have been barking
we should have been barking
you should have been barking
they should have been barking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should not bark
you should not bark
she should not bark
we should not bark
you should not bark
they should not bark 	I should not be barking
you should not be barking
she should not be barking
we should not be barking
you should not be barking
they should not be barking	I should not have barked
you should not have barked
she should not have barked
we should not have barked
you should not have barked
they should not have barked	I should not have been barking
you should not have been barking
she should not have been barking
we should not have been barking
you should not have been barking
they should not have been barking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I bark?
should you bark?
should she bark?
should we bark?
should you bark?
should they bark? 	should I be barking?
should you be barking?
should she be barking?
should we be barking?
should you be barking?
should they be barking? 	should I have barked?
should you have barked?
should she have barked?
should we have barked?
should you have barked?
should they have barked? 	should I have been barking?
should you have been barking?
should she have been barking?
should we have been barking?
should you have been barking?
should they have been barking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I not bark?
should you not bark?
should she not bark?
should we not bark?
should you not bark?
should they not bark? 	should I not be barking?
should you not be barking?
should she not be barking?
should we not be barking?
should you not be barking?
should they not be barking? 	should I not have barked?
should you not have barked?
should she not have barked?
should we not have barked?
should you not have barked?
should they not have barked? 	should I not have been barking?
should you not have been barking?
should she not have been barking?
should we not have been barking?
should you not have been barking?
should they not have been barking?