English verb conjugation
COULD PROCTOR

Regular verb: proctor - proctored - proctored

Affirmation

Simple form	V-ing form
I could proctor you could proctor she could proctor we could proctor you could proctor they could proctor	I could be proctoring you could be proctoring she could be proctoring we could be proctoring you could be proctoring they could be proctoring
Perfect	V-ing perfect
I could have proctored you could have proctored she could have proctored we could have proctored you could have proctored they could have proctored	I could have been proctoring you could have been proctoring she could have been proctoring we could have been proctoring you could have been proctoring they could have been proctoring

Negation

Simple form	V-ing form
I couldn't proctor you couldn't proctor she couldn't proctor we couldn't proctor you couldn't proctor they couldn't proctor	I couldn't be proctoring you couldn't be proctoring she couldn't be proctoring we couldn't be proctoring you couldn't be proctoring they couldn't be proctoring
Perfect	V-ing perfect
I couldn't have proctored you couldn't have proctored she couldn't have proctored we couldn't have proctored you couldn't have proctored they couldn't have proctored	I couldn't have been proctoring you couldn't have been proctoring she couldn't have been proctoring we couldn't have been proctoring you couldn't have been proctoring they couldn't have been proctoring

Interrogative form

Simple form	V-ing form
could I proctor? could you proctor? could she proctor? could we proctor? could you proctor? could they proctor?	could I be proctoring? could you be proctoring? could she be proctoring? could we be proctoring? could you be proctoring? could they be proctoring?
Perfect	V-ing perfect
could I have proctored? could you have proctored? could she have proctored? could we have proctored? could you have proctored? could they have proctored?	could I have been proctoring? could you have been proctoring? could she have been proctoring? could we have been proctoring? could you have been proctoring? could they have been proctoring?

Interro-negative form

Simple form	V-ing form
couldn't I proctor? couldn't you proctor? couldn't she proctor? couldn't we proctor? couldn't you proctor? couldn't they proctor?	couldn't I be proctoring? couldn't you be proctoring? couldn't she be proctoring? couldn't we be proctoring? couldn't you be proctoring? couldn't they be proctoring?
Perfect	V-ing perfect
couldn't I have proctored? couldn't you have proctored? couldn't she have proctored? couldn't we have proctored? couldn't you have proctored? couldn't they have proctored?	couldn't I have been proctoring? couldn't you have been proctoring? couldn't she have been proctoring? couldn't we have been proctoring? couldn't you have been proctoring? couldn't they have been proctoring?