English verb conjugation
COULD RULE

Regular verb: rule - ruled - ruled

Affirmation

Simple form	V-ing form
I could rule you could rule he could rule we could rule you could rule they could rule	I could be ruling you could be ruling he could be ruling we could be ruling you could be ruling they could be ruling
Perfect	V-ing perfect
I could have ruled you could have ruled he could have ruled we could have ruled you could have ruled they could have ruled	I could have been ruling you could have been ruling he could have been ruling we could have been ruling you could have been ruling they could have been ruling

Negation

Simple form	V-ing form
I couldn't rule you couldn't rule he couldn't rule we couldn't rule you couldn't rule they couldn't rule	I couldn't be ruling you couldn't be ruling he couldn't be ruling we couldn't be ruling you couldn't be ruling they couldn't be ruling
Perfect	V-ing perfect
I couldn't have ruled you couldn't have ruled he couldn't have ruled we couldn't have ruled you couldn't have ruled they couldn't have ruled	I couldn't have been ruling you couldn't have been ruling he couldn't have been ruling we couldn't have been ruling you couldn't have been ruling they couldn't have been ruling

Interrogative form

Simple form	V-ing form
could I rule? could you rule? could he rule? could we rule? could you rule? could they rule?	could I be ruling? could you be ruling? could he be ruling? could we be ruling? could you be ruling? could they be ruling?
Perfect	V-ing perfect
could I have ruled? could you have ruled? could he have ruled? could we have ruled? could you have ruled? could they have ruled?	could I have been ruling? could you have been ruling? could he have been ruling? could we have been ruling? could you have been ruling? could they have been ruling?

Interro-negative form

Simple form	V-ing form
couldn't I rule? couldn't you rule? couldn't he rule? couldn't we rule? couldn't you rule? couldn't they rule?	couldn't I be ruling? couldn't you be ruling? couldn't he be ruling? couldn't we be ruling? couldn't you be ruling? couldn't they be ruling?
Perfect	V-ing perfect
couldn't I have ruled? couldn't you have ruled? couldn't he have ruled? couldn't we have ruled? couldn't you have ruled? couldn't they have ruled?	couldn't I have been ruling? couldn't you have been ruling? couldn't he have been ruling? couldn't we have been ruling? couldn't you have been ruling? couldn't they have been ruling?