I can hackle you can hackle he can hackle we can hackle you can hackle they can hackle
V-ing form
I can be hackling you can be hackling he can be hackling we can be hackling you can be hackling they can be hackling
Perfect
I can have hackled you can have hackled he can have hackled we can have hackled you can have hackled they can have hackled
V-ing perfect
I can have been hackling you can have been hackling he can have been hackling we can have been hackling you can have been hackling they can have been hackling
Negation
Simple form
I can't hackle you can't hackle he can't hackle we can't hackle you can't hackle they can't hackle
V-ing form
I can't be hackling you can't be hackling he can't be hackling we can't be hackling you can't be hackling they can't be hackling
Perfect
I can't have hackled you can't have hackled he can't have hackled we can't have hackled you can't have hackled they can't have hackled
V-ing perfect
I can't have been hackling you can't have been hackling he can't have been hackling we can't have been hackling you can't have been hackling they can't have been hackling
Interrogative form
Simple form
can I hackle? can you hackle? can he hackle? can we hackle? can you hackle? can they hackle?
V-ing form
can I be hackling? can you be hackling? can he be hackling? can we be hackling? can you be hackling? can they be hackling?
Perfect
can I have hackled? can you have hackled? can he have hackled? can we have hackled? can you have hackled? can they have hackled?
V-ing perfect
can I have been hackling? can you have been hackling? can he have been hackling? can we have been hackling? can you have been hackling? can they have been hackling?
Interro-negative form
Simple form
can't I hackle? can't you hackle? can't he hackle? can't we hackle? can't you hackle? can't they hackle?
V-ing form
can't I be hackling? can't you be hackling? can't he be hackling? can't we be hackling? can't you be hackling? can't they be hackling?
Perfect
can't I have hackled? can't you have hackled? can't he have hackled? can't we have hackled? can't you have hackled? can't they have hackled?
V-ing perfect
can't I have been hackling? can't you have been hackling? can't he have been hackling? can't we have been hackling? can't you have been hackling? can't they have been hackling?