English verb conjugation
COULD HACKLE

Regular verb: hackle - hackled - hackled

Affirmation

Simple form	V-ing form
I could hackle you could hackle he could hackle we could hackle you could hackle they could hackle	I could be hackling you could be hackling he could be hackling we could be hackling you could be hackling they could be hackling
Perfect	V-ing perfect
I could have hackled you could have hackled he could have hackled we could have hackled you could have hackled they could have hackled	I could have been hackling you could have been hackling he could have been hackling we could have been hackling you could have been hackling they could have been hackling

Negation

Simple form	V-ing form
I couldn't hackle you couldn't hackle he couldn't hackle we couldn't hackle you couldn't hackle they couldn't hackle	I couldn't be hackling you couldn't be hackling he couldn't be hackling we couldn't be hackling you couldn't be hackling they couldn't be hackling
Perfect	V-ing perfect
I couldn't have hackled you couldn't have hackled he couldn't have hackled we couldn't have hackled you couldn't have hackled they couldn't have hackled	I couldn't have been hackling you couldn't have been hackling he couldn't have been hackling we couldn't have been hackling you couldn't have been hackling they couldn't have been hackling

Interrogative form

Simple form	V-ing form
could I hackle? could you hackle? could he hackle? could we hackle? could you hackle? could they hackle?	could I be hackling? could you be hackling? could he be hackling? could we be hackling? could you be hackling? could they be hackling?
Perfect	V-ing perfect
could I have hackled? could you have hackled? could he have hackled? could we have hackled? could you have hackled? could they have hackled?	could I have been hackling? could you have been hackling? could he have been hackling? could we have been hackling? could you have been hackling? could they have been hackling?

Interro-negative form

Simple form	V-ing form
couldn't I hackle? couldn't you hackle? couldn't he hackle? couldn't we hackle? couldn't you hackle? couldn't they hackle?	couldn't I be hackling? couldn't you be hackling? couldn't he be hackling? couldn't we be hackling? couldn't you be hackling? couldn't they be hackling?
Perfect	V-ing perfect
couldn't I have hackled? couldn't you have hackled? couldn't he have hackled? couldn't we have hackled? couldn't you have hackled? couldn't they have hackled?	couldn't I have been hackling? couldn't you have been hackling? couldn't he have been hackling? couldn't we have been hackling? couldn't you have been hackling? couldn't they have been hackling?