English verb conjugation
COULD CACKLE

Regular verb: cackle - cackled - cackled

Affirmation

Simple form	V-ing form
I could cackle you could cackle she could cackle we could cackle you could cackle they could cackle	I could be cackling you could be cackling she could be cackling we could be cackling you could be cackling they could be cackling
Perfect	V-ing perfect
I could have cackled you could have cackled she could have cackled we could have cackled you could have cackled they could have cackled	I could have been cackling you could have been cackling she could have been cackling we could have been cackling you could have been cackling they could have been cackling

Negation

Simple form	V-ing form
I couldn't cackle you couldn't cackle she couldn't cackle we couldn't cackle you couldn't cackle they couldn't cackle	I couldn't be cackling you couldn't be cackling she couldn't be cackling we couldn't be cackling you couldn't be cackling they couldn't be cackling
Perfect	V-ing perfect
I couldn't have cackled you couldn't have cackled she couldn't have cackled we couldn't have cackled you couldn't have cackled they couldn't have cackled	I couldn't have been cackling you couldn't have been cackling she couldn't have been cackling we couldn't have been cackling you couldn't have been cackling they couldn't have been cackling

Interrogative form

Simple form	V-ing form
could I cackle? could you cackle? could she cackle? could we cackle? could you cackle? could they cackle?	could I be cackling? could you be cackling? could she be cackling? could we be cackling? could you be cackling? could they be cackling?
Perfect	V-ing perfect
could I have cackled? could you have cackled? could she have cackled? could we have cackled? could you have cackled? could they have cackled?	could I have been cackling? could you have been cackling? could she have been cackling? could we have been cackling? could you have been cackling? could they have been cackling?

Interro-negative form

Simple form	V-ing form
couldn't I cackle? couldn't you cackle? couldn't she cackle? couldn't we cackle? couldn't you cackle? couldn't they cackle?	couldn't I be cackling? couldn't you be cackling? couldn't she be cackling? couldn't we be cackling? couldn't you be cackling? couldn't they be cackling?
Perfect	V-ing perfect
couldn't I have cackled? couldn't you have cackled? couldn't she have cackled? couldn't we have cackled? couldn't you have cackled? couldn't they have cackled?	couldn't I have been cackling? couldn't you have been cackling? couldn't she have been cackling? couldn't we have been cackling? couldn't you have been cackling? couldn't they have been cackling?