Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I could shout shout you could shout shout he could shout shout we could shout shout you could shout shout they could shout shout
V-ing form
I could be shout shouting you could be shout shouting he could be shout shouting we could be shout shouting you could be shout shouting they could be shout shouting
Perfect
I could have shout shouted you could have shout shouted he could have shout shouted we could have shout shouted you could have shout shouted they could have shout shouted
V-ing perfect
I could have been shout shouting you could have been shout shouting he could have been shout shouting we could have been shout shouting you could have been shout shouting they could have been shout shouting
Negation
Simple form
I could not shout shout you could not shout shout he could not shout shout we could not shout shout you could not shout shout they could not shout shout
V-ing form
I could not be shout shouting you could not be shout shouting he could not be shout shouting we could not be shout shouting you could not be shout shouting they could not be shout shouting
Perfect
I could not have shout shouted you could not have shout shouted he could not have shout shouted we could not have shout shouted you could not have shout shouted they could not have shout shouted
V-ing perfect
I could not have been shout shouting you could not have been shout shouting he could not have been shout shouting we could not have been shout shouting you could not have been shout shouting they could not have been shout shouting
Interrogative form
Simple form
could I shout shout? could you shout shout? could he shout shout? could we shout shout? could you shout shout? could they shout shout?
V-ing form
could I be shout shouting? could you be shout shouting? could he be shout shouting? could we be shout shouting? could you be shout shouting? could they be shout shouting?
Perfect
could I have shout shouted? could you have shout shouted? could he have shout shouted? could we have shout shouted? could you have shout shouted? could they have shout shouted?
V-ing perfect
could I have been shout shouting? could you have been shout shouting? could he have been shout shouting? could we have been shout shouting? could you have been shout shouting? could they have been shout shouting?
Interro-negative form
Simple form
could I not shout shout? could you not shout shout? could he not shout shout? could we not shout shout? could you not shout shout? could they not shout shout?
V-ing form
could I not be shout shouting? could you not be shout shouting? could he not be shout shouting? could we not be shout shouting? could you not be shout shouting? could they not be shout shouting?
Perfect
could I not have shout shouted? could you not have shout shouted? could he not have shout shouted? could we not have shout shouted? could you not have shout shouted? could they not have shout shouted?
V-ing perfect
could I not have been shout shouting? could you not have been shout shouting? could he not have been shout shouting? could we not have been shout shouting? could you not have been shout shouting? could they not have been shout shouting?