English verb conjugation
COULD TRIANGULATE

Regular verb: triangulate - triangulated - triangulated

Affirmation

Simple form	V-ing form
I could triangulate you could triangulate he could triangulate we could triangulate you could triangulate they could triangulate	I could be triangulating you could be triangulating he could be triangulating we could be triangulating you could be triangulating they could be triangulating
Perfect	V-ing perfect
I could have triangulated you could have triangulated he could have triangulated we could have triangulated you could have triangulated they could have triangulated	I could have been triangulating you could have been triangulating he could have been triangulating we could have been triangulating you could have been triangulating they could have been triangulating

Negation

Simple form	V-ing form
I couldn't triangulate you couldn't triangulate he couldn't triangulate we couldn't triangulate you couldn't triangulate they couldn't triangulate	I couldn't be triangulating you couldn't be triangulating he couldn't be triangulating we couldn't be triangulating you couldn't be triangulating they couldn't be triangulating
Perfect	V-ing perfect
I couldn't have triangulated you couldn't have triangulated he couldn't have triangulated we couldn't have triangulated you couldn't have triangulated they couldn't have triangulated	I couldn't have been triangulating you couldn't have been triangulating he couldn't have been triangulating we couldn't have been triangulating you couldn't have been triangulating they couldn't have been triangulating

Interrogative form

Simple form	V-ing form
could I triangulate? could you triangulate? could he triangulate? could we triangulate? could you triangulate? could they triangulate?	could I be triangulating? could you be triangulating? could he be triangulating? could we be triangulating? could you be triangulating? could they be triangulating?
Perfect	V-ing perfect
could I have triangulated? could you have triangulated? could he have triangulated? could we have triangulated? could you have triangulated? could they have triangulated?	could I have been triangulating? could you have been triangulating? could he have been triangulating? could we have been triangulating? could you have been triangulating? could they have been triangulating?

Interro-negative form

Simple form	V-ing form
couldn't I triangulate? couldn't you triangulate? couldn't he triangulate? couldn't we triangulate? couldn't you triangulate? couldn't they triangulate?	couldn't I be triangulating? couldn't you be triangulating? couldn't he be triangulating? couldn't we be triangulating? couldn't you be triangulating? couldn't they be triangulating?
Perfect	V-ing perfect
couldn't I have triangulated? couldn't you have triangulated? couldn't he have triangulated? couldn't we have triangulated? couldn't you have triangulated? couldn't they have triangulated?	couldn't I have been triangulating? couldn't you have been triangulating? couldn't he have been triangulating? couldn't we have been triangulating? couldn't you have been triangulating? couldn't they have been triangulating?