English verb conjugation
COULD SHRUG

Regular verb: shrug - shrugged - shrugged

Affirmation

Simple form	V-ing form
I could shrug you could shrug he could shrug we could shrug you could shrug they could shrug	I could be shrugging you could be shrugging he could be shrugging we could be shrugging you could be shrugging they could be shrugging
Perfect	V-ing perfect
I could have shrugged you could have shrugged he could have shrugged we could have shrugged you could have shrugged they could have shrugged	I could have been shrugging you could have been shrugging he could have been shrugging we could have been shrugging you could have been shrugging they could have been shrugging

Negation

Simple form	V-ing form
I could not shrug you could not shrug he could not shrug we could not shrug you could not shrug they could not shrug	I could not be shrugging you could not be shrugging he could not be shrugging we could not be shrugging you could not be shrugging they could not be shrugging
Perfect	V-ing perfect
I could not have shrugged you could not have shrugged he could not have shrugged we could not have shrugged you could not have shrugged they could not have shrugged	I could not have been shrugging you could not have been shrugging he could not have been shrugging we could not have been shrugging you could not have been shrugging they could not have been shrugging

Interrogative form

Simple form	V-ing form
could I shrug? could you shrug? could he shrug? could we shrug? could you shrug? could they shrug?	could I be shrugging? could you be shrugging? could he be shrugging? could we be shrugging? could you be shrugging? could they be shrugging?
Perfect	V-ing perfect
could I have shrugged? could you have shrugged? could he have shrugged? could we have shrugged? could you have shrugged? could they have shrugged?	could I have been shrugging? could you have been shrugging? could he have been shrugging? could we have been shrugging? could you have been shrugging? could they have been shrugging?

Interro-negative form

Simple form	V-ing form
could I not shrug? could you not shrug? could he not shrug? could we not shrug? could you not shrug? could they not shrug?	could I not be shrugging? could you not be shrugging? could he not be shrugging? could we not be shrugging? could you not be shrugging? could they not be shrugging?
Perfect	V-ing perfect
could I not have shrugged? could you not have shrugged? could he not have shrugged? could we not have shrugged? could you not have shrugged? could they not have shrugged?	could I not have been shrugging? could you not have been shrugging? could he not have been shrugging? could we not have been shrugging? could you not have been shrugging? could they not have been shrugging?