English verb conjugation
COULD JIGSAW

Regular verb: jigsaw - jigsawed - jigsawed

Affirmation

Simple form	V-ing form
I could jigsaw you could jigsaw he could jigsaw we could jigsaw you could jigsaw they could jigsaw	I could be jigsawing you could be jigsawing he could be jigsawing we could be jigsawing you could be jigsawing they could be jigsawing
Perfect	V-ing perfect
I could have jigsawed you could have jigsawed he could have jigsawed we could have jigsawed you could have jigsawed they could have jigsawed	I could have been jigsawing you could have been jigsawing he could have been jigsawing we could have been jigsawing you could have been jigsawing they could have been jigsawing

Negation

Simple form	V-ing form
I could not jigsaw you could not jigsaw he could not jigsaw we could not jigsaw you could not jigsaw they could not jigsaw	I could not be jigsawing you could not be jigsawing he could not be jigsawing we could not be jigsawing you could not be jigsawing they could not be jigsawing
Perfect	V-ing perfect
I could not have jigsawed you could not have jigsawed he could not have jigsawed we could not have jigsawed you could not have jigsawed they could not have jigsawed	I could not have been jigsawing you could not have been jigsawing he could not have been jigsawing we could not have been jigsawing you could not have been jigsawing they could not have been jigsawing

Interrogative form

Simple form	V-ing form
could I jigsaw? could you jigsaw? could he jigsaw? could we jigsaw? could you jigsaw? could they jigsaw?	could I be jigsawing? could you be jigsawing? could he be jigsawing? could we be jigsawing? could you be jigsawing? could they be jigsawing?
Perfect	V-ing perfect
could I have jigsawed? could you have jigsawed? could he have jigsawed? could we have jigsawed? could you have jigsawed? could they have jigsawed?	could I have been jigsawing? could you have been jigsawing? could he have been jigsawing? could we have been jigsawing? could you have been jigsawing? could they have been jigsawing?

Interro-negative form

Simple form	V-ing form
could I not jigsaw? could you not jigsaw? could he not jigsaw? could we not jigsaw? could you not jigsaw? could they not jigsaw?	could I not be jigsawing? could you not be jigsawing? could he not be jigsawing? could we not be jigsawing? could you not be jigsawing? could they not be jigsawing?
Perfect	V-ing perfect
could I not have jigsawed? could you not have jigsawed? could he not have jigsawed? could we not have jigsawed? could you not have jigsawed? could they not have jigsawed?	could I not have been jigsawing? could you not have been jigsawing? could he not have been jigsawing? could we not have been jigsawing? could you not have been jigsawing? could they not have been jigsawing?