English verb conjugation
COULD STRAP

Regular verb: strap - strapped - strapped

Affirmation

Simple form	V-ing form
I could strap you could strap he could strap we could strap you could strap they could strap	I could be strapping you could be strapping he could be strapping we could be strapping you could be strapping they could be strapping
Perfect	V-ing perfect
I could have strapped you could have strapped he could have strapped we could have strapped you could have strapped they could have strapped	I could have been strapping you could have been strapping he could have been strapping we could have been strapping you could have been strapping they could have been strapping

Negation

Simple form	V-ing form
I could not strap you could not strap he could not strap we could not strap you could not strap they could not strap	I could not be strapping you could not be strapping he could not be strapping we could not be strapping you could not be strapping they could not be strapping
Perfect	V-ing perfect
I could not have strapped you could not have strapped he could not have strapped we could not have strapped you could not have strapped they could not have strapped	I could not have been strapping you could not have been strapping he could not have been strapping we could not have been strapping you could not have been strapping they could not have been strapping

Interrogative form

Simple form	V-ing form
could I strap? could you strap? could he strap? could we strap? could you strap? could they strap?	could I be strapping? could you be strapping? could he be strapping? could we be strapping? could you be strapping? could they be strapping?
Perfect	V-ing perfect
could I have strapped? could you have strapped? could he have strapped? could we have strapped? could you have strapped? could they have strapped?	could I have been strapping? could you have been strapping? could he have been strapping? could we have been strapping? could you have been strapping? could they have been strapping?

Interro-negative form

Simple form	V-ing form
could I not strap? could you not strap? could he not strap? could we not strap? could you not strap? could they not strap?	could I not be strapping? could you not be strapping? could he not be strapping? could we not be strapping? could you not be strapping? could they not be strapping?
Perfect	V-ing perfect
could I not have strapped? could you not have strapped? could he not have strapped? could we not have strapped? could you not have strapped? could they not have strapped?	could I not have been strapping? could you not have been strapping? could he not have been strapping? could we not have been strapping? could you not have been strapping? could they not have been strapping?