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 couldn't rue you couldn't rue he 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 he couldn't be ruing we couldn't be ruing you couldn't be ruing they couldn't be ruing
Perfect	V-ing perfect
I couldn't have rued you couldn't have rued he 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 he 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
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
couldn't I rue? couldn't you rue? couldn't he 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 he be ruing? couldn't we be ruing? couldn't you be ruing? couldn't they be ruing?
Perfect	V-ing perfect
couldn't I have rued? couldn't you have rued? couldn't he 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 he have been ruing? couldn't we have been ruing? couldn't you have been ruing? couldn't they have been ruing?