could ratoon
Regular verb: ratoon - ratooned- ratooned

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could ratoon
you could ratoon
he could ratoon
we could ratoon
you could ratoon
they could ratoon 	I could be ratooning
you could be ratooning
he could be ratooning
we could be ratooning
you could be ratooning
they could be ratooning	I could have ratooned
you could have ratooned
he could have ratooned
we could have ratooned
you could have ratooned
they could have ratooned	I could have been ratooning
you could have been ratooning
he could have been ratooning
we could have been ratooning
you could have been ratooning
they could have been ratooning	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not ratoon
you could not ratoon
he could not ratoon
we could not ratoon
you could not ratoon
they could not ratoon 	I could not be ratooning
you could not be ratooning
he could not be ratooning
we could not be ratooning
you could not be ratooning
they could not be ratooning	I could not have ratooned
you could not have ratooned
he could not have ratooned
we could not have ratooned
you could not have ratooned
they could not have ratooned	I could not have been ratooning
you could not have been ratooning
he could not have been ratooning
we could not have been ratooning
you could not have been ratooning
they could not have been ratooning	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I ratoon?
could you ratoon?
could he ratoon?
could we ratoon?
could you ratoon?
could they ratoon? 	could I be ratooning?
could you be ratooning?
could he be ratooning?
could we be ratooning?
could you be ratooning?
could they be ratooning? 	could I have ratooned?
could you have ratooned?
could he have ratooned?
could we have ratooned?
could you have ratooned?
could they have ratooned? 	could I have been ratooning?
could you have been ratooning?
could he have been ratooning?
could we have been ratooning?
could you have been ratooning?
could they have been ratooning? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not ratoon?
could you not ratoon?
could he not ratoon?
could we not ratoon?
could you not ratoon?
could they not ratoon? 	could I not be ratooning?
could you not be ratooning?
could he not be ratooning?
could we not be ratooning?
could you not be ratooning?
could they not be ratooning? 	could I not have ratooned?
could you not have ratooned?
could he not have ratooned?
could we not have ratooned?
could you not have ratooned?
could they not have ratooned? 	could I not have been ratooning?
could you not have been ratooning?
could he not have been ratooning?
could we not have been ratooning?
could you not have been ratooning?
could they not have been ratooning?