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 couldn't jigsaw you couldn't jigsaw he couldn't jigsaw we couldn't jigsaw you couldn't jigsaw they couldn't jigsaw	I couldn't be jigsawing you couldn't be jigsawing he couldn't be jigsawing we couldn't be jigsawing you couldn't be jigsawing they couldn't be jigsawing
Perfect	V-ing perfect
I couldn't have jigsawed you couldn't have jigsawed he couldn't have jigsawed we couldn't have jigsawed you couldn't have jigsawed they couldn't have jigsawed	I couldn't have been jigsawing you couldn't have been jigsawing he couldn't have been jigsawing we couldn't have been jigsawing you couldn't have been jigsawing they couldn't 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
couldn't I jigsaw? couldn't you jigsaw? couldn't he jigsaw? couldn't we jigsaw? couldn't you jigsaw? couldn't they jigsaw?	couldn't I be jigsawing? couldn't you be jigsawing? couldn't he be jigsawing? couldn't we be jigsawing? couldn't you be jigsawing? couldn't they be jigsawing?
Perfect	V-ing perfect
couldn't I have jigsawed? couldn't you have jigsawed? couldn't he have jigsawed? couldn't we have jigsawed? couldn't you have jigsawed? couldn't they have jigsawed?	couldn't I have been jigsawing? couldn't you have been jigsawing? couldn't he have been jigsawing? couldn't we have been jigsawing? couldn't you have been jigsawing? couldn't they have been jigsawing?