could ratoon
Regular verb: ratoon - ratooned- ratooned

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could ratoon
you could ratoon
she could ratoon
we could ratoon
you could ratoon
they could ratoon 	I could be ratooning
you could be ratooning
she could be ratooning
we could be ratooning
you could be ratooning
they could be ratooning	I could have ratooned
you could have ratooned
she 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
she 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 couldn't ratoon
you couldn't ratoon
she couldn't ratoon
we couldn't ratoon
you couldn't ratoon
they couldn't ratoon 	I couldn't be ratooning
you couldn't be ratooning
she couldn't be ratooning
we couldn't be ratooning
you couldn't be ratooning
they couldn't be ratooning	I couldn't have ratooned
you couldn't have ratooned
she couldn't have ratooned
we couldn't have ratooned
you couldn't have ratooned
they couldn't have ratooned	I couldn't have been ratooning
you couldn't have been ratooning
she couldn't have been ratooning
we couldn't have been ratooning
you couldn't have been ratooning
they couldn't have been ratooning	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I ratoon?
could you ratoon?
could she ratoon?
could we ratoon?
could you ratoon?
could they ratoon? 	could I be ratooning?
could you be ratooning?
could she be ratooning?
could we be ratooning?
could you be ratooning?
could they be ratooning? 	could I have ratooned?
could you have ratooned?
could she 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 she 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 	
couldn't I ratoon?
couldn't you ratoon?
couldn't she ratoon?
couldn't we ratoon?
couldn't you ratoon?
couldn't they ratoon? 	couldn't I be ratooning?
couldn't you be ratooning?
couldn't she be ratooning?
couldn't we be ratooning?
couldn't you be ratooning?
couldn't they be ratooning? 	couldn't I have ratooned?
couldn't you have ratooned?
couldn't she have ratooned?
couldn't we have ratooned?
couldn't you have ratooned?
couldn't they have ratooned? 	couldn't I have been ratooning?
couldn't you have been ratooning?
couldn't she have been ratooning?
couldn't we have been ratooning?
couldn't you have been ratooning?
couldn't they have been ratooning?