English verb conjugation
COULD RUE

Regular verb: rue - rued - rued

Affirmation

Simple form	V-ing form
I could rue you could rue he could rue we could rue you could rue they could rue	I could be ruing you could be ruing he could be ruing we could be ruing you could be ruing they could be ruing
Perfect	V-ing perfect
I could have rued you could have rued he 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 he 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
I could not rue you could not rue he could not rue we could not rue you could not rue they could not rue	I could not be ruing you could not be ruing he could not be ruing we could not be ruing you could not be ruing they could not be ruing
Perfect	V-ing perfect
I could not have rued you could not have rued he could not have rued we could not have rued you could not have rued they could not have rued	I could not have been ruing you could not have been ruing he could not have been ruing we could not have been ruing you could not have been ruing they could not have been ruing

Interrogative form

Simple form	V-ing form
could I rue? could you rue? could he rue? could we rue? could you rue? could they rue?	could I be ruing? could you be ruing? could he be ruing? could we be ruing? could you be ruing? could they be ruing?
Perfect	V-ing perfect
could I have rued? could you have rued? could he 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 he 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
could I not rue? could you not rue? could he not rue? could we not rue? could you not rue? could they not rue?	could I not be ruing? could you not be ruing? could he not be ruing? could we not be ruing? could you not be ruing? could they not be ruing?
Perfect	V-ing perfect
could I not have rued? could you not have rued? could he not have rued? could we not have rued? could you not have rued? could they not have rued?	could I not have been ruing? could you not have been ruing? could he not have been ruing? could we not have been ruing? could you not have been ruing? could they not have been ruing?