English verb conjugation
COULD SHADOW

Regular verb: shadow - shadowed - shadowed

Affirmation

Simple form	V-ing form
I could shadow you could shadow he could shadow we could shadow you could shadow they could shadow	I could be shadowing you could be shadowing he could be shadowing we could be shadowing you could be shadowing they could be shadowing
Perfect	V-ing perfect
I could have shadowed you could have shadowed he could have shadowed we could have shadowed you could have shadowed they could have shadowed	I could have been shadowing you could have been shadowing he could have been shadowing we could have been shadowing you could have been shadowing they could have been shadowing

Negation

Simple form	V-ing form
I could not shadow you could not shadow he could not shadow we could not shadow you could not shadow they could not shadow	I could not be shadowing you could not be shadowing he could not be shadowing we could not be shadowing you could not be shadowing they could not be shadowing
Perfect	V-ing perfect
I could not have shadowed you could not have shadowed he could not have shadowed we could not have shadowed you could not have shadowed they could not have shadowed	I could not have been shadowing you could not have been shadowing he could not have been shadowing we could not have been shadowing you could not have been shadowing they could not have been shadowing

Interrogative form

Simple form	V-ing form
could I shadow? could you shadow? could he shadow? could we shadow? could you shadow? could they shadow?	could I be shadowing? could you be shadowing? could he be shadowing? could we be shadowing? could you be shadowing? could they be shadowing?
Perfect	V-ing perfect
could I have shadowed? could you have shadowed? could he have shadowed? could we have shadowed? could you have shadowed? could they have shadowed?	could I have been shadowing? could you have been shadowing? could he have been shadowing? could we have been shadowing? could you have been shadowing? could they have been shadowing?

Interro-negative form

Simple form	V-ing form
could I not shadow? could you not shadow? could he not shadow? could we not shadow? could you not shadow? could they not shadow?	could I not be shadowing? could you not be shadowing? could he not be shadowing? could we not be shadowing? could you not be shadowing? could they not be shadowing?
Perfect	V-ing perfect
could I not have shadowed? could you not have shadowed? could he not have shadowed? could we not have shadowed? could you not have shadowed? could they not have shadowed?	could I not have been shadowing? could you not have been shadowing? could he not have been shadowing? could we not have been shadowing? could you not have been shadowing? could they not have been shadowing?