could shout
Regular verb: shout - shouted- shouted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could shout
you could shout
he could shout
we could shout
you could shout
they could shout 	I could be shouting
you could be shouting
he could be shouting
we could be shouting
you could be shouting
they could be shouting	I could have shouted
you could have shouted
he 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
he 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 could not shout
you could not shout
he could not shout
we could not shout
you could not shout
they could not shout 	I could not be shouting
you could not be shouting
he could not be shouting
we could not be shouting
you could not be shouting
they could not be shouting	I could not have shouted
you could not have shouted
he could not have shouted
we could not have shouted
you could not have shouted
they could not have shouted	I could not have been shouting
you could not have been shouting
he could not have been shouting
we could not have been shouting
you could not have been shouting
they could not have been shouting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I shout?
could you shout?
could he shout?
could we shout?
could you shout?
could they shout? 	could I be shouting?
could you be shouting?
could he be shouting?
could we be shouting?
could you be shouting?
could they be shouting? 	could I have shouted?
could you have shouted?
could he 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 he 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 	
could I not shout?
could you not shout?
could he not shout?
could we not shout?
could you not shout?
could they not shout? 	could I not be shouting?
could you not be shouting?
could he not be shouting?
could we not be shouting?
could you not be shouting?
could they not be shouting? 	could I not have shouted?
could you not have shouted?
could he not have shouted?
could we not have shouted?
could you not have shouted?
could they not have shouted? 	could I not have been shouting?
could you not have been shouting?
could he not have been shouting?
could we not have been shouting?
could you not have been shouting?
could they not have been shouting?