could tweet
Regular verb: tweet - tweeted- tweeted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could tweet
you could tweet
he could tweet
we could tweet
you could tweet
they could tweet 	I could be tweeting
you could be tweeting
he could be tweeting
we could be tweeting
you could be tweeting
they could be tweeting	I could have tweeted
you could have tweeted
he could have tweeted
we could have tweeted
you could have tweeted
they could have tweeted	I could have been tweeting
you could have been tweeting
he could have been tweeting
we could have been tweeting
you could have been tweeting
they could have been tweeting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not tweet
you could not tweet
he could not tweet
we could not tweet
you could not tweet
they could not tweet 	I could not be tweeting
you could not be tweeting
he could not be tweeting
we could not be tweeting
you could not be tweeting
they could not be tweeting	I could not have tweeted
you could not have tweeted
he could not have tweeted
we could not have tweeted
you could not have tweeted
they could not have tweeted	I could not have been tweeting
you could not have been tweeting
he could not have been tweeting
we could not have been tweeting
you could not have been tweeting
they could not have been tweeting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I tweet?
could you tweet?
could he tweet?
could we tweet?
could you tweet?
could they tweet? 	could I be tweeting?
could you be tweeting?
could he be tweeting?
could we be tweeting?
could you be tweeting?
could they be tweeting? 	could I have tweeted?
could you have tweeted?
could he have tweeted?
could we have tweeted?
could you have tweeted?
could they have tweeted? 	could I have been tweeting?
could you have been tweeting?
could he have been tweeting?
could we have been tweeting?
could you have been tweeting?
could they have been tweeting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not tweet?
could you not tweet?
could he not tweet?
could we not tweet?
could you not tweet?
could they not tweet? 	could I not be tweeting?
could you not be tweeting?
could he not be tweeting?
could we not be tweeting?
could you not be tweeting?
could they not be tweeting? 	could I not have tweeted?
could you not have tweeted?
could he not have tweeted?
could we not have tweeted?
could you not have tweeted?
could they not have tweeted? 	could I not have been tweeting?
could you not have been tweeting?
could he not have been tweeting?
could we not have been tweeting?
could you not have been tweeting?
could they not have been tweeting?