English verb conjugation
COULD CONTROL

Regular verb: control - controlled - controlled

Affirmation

Simple form	V-ing form
I could control you could control she could control we could control you could control they could control	I could be controlling you could be controlling she could be controlling we could be controlling you could be controlling they could be controlling
Perfect	V-ing perfect
I could have controlled you could have controlled she could have controlled we could have controlled you could have controlled they could have controlled	I could have been controlling you could have been controlling she could have been controlling we could have been controlling you could have been controlling they could have been controlling

Negation

Simple form	V-ing form
I couldn't control you couldn't control she couldn't control we couldn't control you couldn't control they couldn't control	I couldn't be controlling you couldn't be controlling she couldn't be controlling we couldn't be controlling you couldn't be controlling they couldn't be controlling
Perfect	V-ing perfect
I couldn't have controlled you couldn't have controlled she couldn't have controlled we couldn't have controlled you couldn't have controlled they couldn't have controlled	I couldn't have been controlling you couldn't have been controlling she couldn't have been controlling we couldn't have been controlling you couldn't have been controlling they couldn't have been controlling

Interrogative form

Simple form	V-ing form
could I control? could you control? could she control? could we control? could you control? could they control?	could I be controlling? could you be controlling? could she be controlling? could we be controlling? could you be controlling? could they be controlling?
Perfect	V-ing perfect
could I have controlled? could you have controlled? could she have controlled? could we have controlled? could you have controlled? could they have controlled?	could I have been controlling? could you have been controlling? could she have been controlling? could we have been controlling? could you have been controlling? could they have been controlling?

Interro-negative form

Simple form	V-ing form
couldn't I control? couldn't you control? couldn't she control? couldn't we control? couldn't you control? couldn't they control?	couldn't I be controlling? couldn't you be controlling? couldn't she be controlling? couldn't we be controlling? couldn't you be controlling? couldn't they be controlling?
Perfect	V-ing perfect
couldn't I have controlled? couldn't you have controlled? couldn't she have controlled? couldn't we have controlled? couldn't you have controlled? couldn't they have controlled?	couldn't I have been controlling? couldn't you have been controlling? couldn't she have been controlling? couldn't we have been controlling? couldn't you have been controlling? couldn't they have been controlling?