could rue
Regular verb: rue - rued- rued

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could rue
you could rue
she could rue
we could rue
you could rue
they could rue 	I could be ruing
you could be ruing
she could be ruing
we could be ruing
you could be ruing
they could be ruing	I could have rued
you could have rued
she could have rued
we could have rued
you could have rued
they could have rued	I could have been ruing
you could have been ruing
she could have been ruing
we could have been ruing
you could have been ruing
they could have been ruing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't rue
you couldn't rue
she couldn't rue
we couldn't rue
you couldn't rue
they couldn't rue 	I couldn't be ruing
you couldn't be ruing
she couldn't be ruing
we couldn't be ruing
you couldn't be ruing
they couldn't be ruing	I couldn't have rued
you couldn't have rued
she couldn't have rued
we couldn't have rued
you couldn't have rued
they couldn't have rued	I couldn't have been ruing
you couldn't have been ruing
she couldn't have been ruing
we couldn't have been ruing
you couldn't have been ruing
they couldn't have been ruing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I rue?
could you rue?
could she rue?
could we rue?
could you rue?
could they rue? 	could I be ruing?
could you be ruing?
could she be ruing?
could we be ruing?
could you be ruing?
could they be ruing? 	could I have rued?
could you have rued?
could she have rued?
could we have rued?
could you have rued?
could they have rued? 	could I have been ruing?
could you have been ruing?
could she have been ruing?
could we have been ruing?
could you have been ruing?
could they have been ruing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I rue?
couldn't you rue?
couldn't she rue?
couldn't we rue?
couldn't you rue?
couldn't they rue? 	couldn't I be ruing?
couldn't you be ruing?
couldn't she be ruing?
couldn't we be ruing?
couldn't you be ruing?
couldn't they be ruing? 	couldn't I have rued?
couldn't you have rued?
couldn't she have rued?
couldn't we have rued?
couldn't you have rued?
couldn't they have rued? 	couldn't I have been ruing?
couldn't you have been ruing?
couldn't she have been ruing?
couldn't we have been ruing?
couldn't you have been ruing?
couldn't they have been ruing?