English verb conjugation
COULD SUPERVISE

Regular verb: supervise - supervised - supervised

Affirmation

Simple form	V-ing form
I could supervise you could supervise he could supervise we could supervise you could supervise they could supervise	I could be supervising you could be supervising he could be supervising we could be supervising you could be supervising they could be supervising
Perfect	V-ing perfect
I could have supervised you could have supervised he could have supervised we could have supervised you could have supervised they could have supervised	I could have been supervising you could have been supervising he could have been supervising we could have been supervising you could have been supervising they could have been supervising

Negation

Simple form	V-ing form
I couldn't supervise you couldn't supervise he couldn't supervise we couldn't supervise you couldn't supervise they couldn't supervise	I couldn't be supervising you couldn't be supervising he couldn't be supervising we couldn't be supervising you couldn't be supervising they couldn't be supervising
Perfect	V-ing perfect
I couldn't have supervised you couldn't have supervised he couldn't have supervised we couldn't have supervised you couldn't have supervised they couldn't have supervised	I couldn't have been supervising you couldn't have been supervising he couldn't have been supervising we couldn't have been supervising you couldn't have been supervising they couldn't have been supervising

Interrogative form

Simple form	V-ing form
could I supervise? could you supervise? could he supervise? could we supervise? could you supervise? could they supervise?	could I be supervising? could you be supervising? could he be supervising? could we be supervising? could you be supervising? could they be supervising?
Perfect	V-ing perfect
could I have supervised? could you have supervised? could he have supervised? could we have supervised? could you have supervised? could they have supervised?	could I have been supervising? could you have been supervising? could he have been supervising? could we have been supervising? could you have been supervising? could they have been supervising?

Interro-negative form

Simple form	V-ing form
couldn't I supervise? couldn't you supervise? couldn't he supervise? couldn't we supervise? couldn't you supervise? couldn't they supervise?	couldn't I be supervising? couldn't you be supervising? couldn't he be supervising? couldn't we be supervising? couldn't you be supervising? couldn't they be supervising?
Perfect	V-ing perfect
couldn't I have supervised? couldn't you have supervised? couldn't he have supervised? couldn't we have supervised? couldn't you have supervised? couldn't they have supervised?	couldn't I have been supervising? couldn't you have been supervising? couldn't he have been supervising? couldn't we have been supervising? couldn't you have been supervising? couldn't they have been supervising?