could shout
Regular verb: shout - shouted- shouted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could shout
you could shout
she could shout
we could shout
you could shout
they could shout 	I could be shouting
you could be shouting
she could be shouting
we could be shouting
you could be shouting
they could be shouting	I could have shouted
you could have shouted
she could have shouted
we could have shouted
you could have shouted
they could have shouted	I could have been shouting
you could have been shouting
she could have been shouting
we could have been shouting
you could have been shouting
they could have been shouting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't shout
you couldn't shout
she couldn't shout
we couldn't shout
you couldn't shout
they couldn't shout 	I couldn't be shouting
you couldn't be shouting
she couldn't be shouting
we couldn't be shouting
you couldn't be shouting
they couldn't be shouting	I couldn't have shouted
you couldn't have shouted
she couldn't have shouted
we couldn't have shouted
you couldn't have shouted
they couldn't have shouted	I couldn't have been shouting
you couldn't have been shouting
she couldn't have been shouting
we couldn't have been shouting
you couldn't have been shouting
they couldn't have been shouting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I shout?
could you shout?
could she shout?
could we shout?
could you shout?
could they shout? 	could I be shouting?
could you be shouting?
could she be shouting?
could we be shouting?
could you be shouting?
could they be shouting? 	could I have shouted?
could you have shouted?
could she have shouted?
could we have shouted?
could you have shouted?
could they have shouted? 	could I have been shouting?
could you have been shouting?
could she have been shouting?
could we have been shouting?
could you have been shouting?
could they have been shouting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I shout?
couldn't you shout?
couldn't she shout?
couldn't we shout?
couldn't you shout?
couldn't they shout? 	couldn't I be shouting?
couldn't you be shouting?
couldn't she be shouting?
couldn't we be shouting?
couldn't you be shouting?
couldn't they be shouting? 	couldn't I have shouted?
couldn't you have shouted?
couldn't she have shouted?
couldn't we have shouted?
couldn't you have shouted?
couldn't they have shouted? 	couldn't I have been shouting?
couldn't you have been shouting?
couldn't she have been shouting?
couldn't we have been shouting?
couldn't you have been shouting?
couldn't they have been shouting?