English verb conjugation
CAN KNACKER

Regular verb: knacker - knackered - knackered

Affirmation

Simple form	V-ing form
I can knacker you can knacker he can knacker we can knacker you can knacker they can knacker	I can be knackering you can be knackering he can be knackering we can be knackering you can be knackering they can be knackering
Perfect	V-ing perfect
I can have knackered you can have knackered he can have knackered we can have knackered you can have knackered they can have knackered	I can have been knackering you can have been knackering he can have been knackering we can have been knackering you can have been knackering they can have been knackering

Negation

Simple form	V-ing form
I can't knacker you can't knacker he can't knacker we can't knacker you can't knacker they can't knacker	I can't be knackering you can't be knackering he can't be knackering we can't be knackering you can't be knackering they can't be knackering
Perfect	V-ing perfect
I can't have knackered you can't have knackered he can't have knackered we can't have knackered you can't have knackered they can't have knackered	I can't have been knackering you can't have been knackering he can't have been knackering we can't have been knackering you can't have been knackering they can't have been knackering

Interrogative form

Simple form	V-ing form
can I knacker? can you knacker? can he knacker? can we knacker? can you knacker? can they knacker?	can I be knackering? can you be knackering? can he be knackering? can we be knackering? can you be knackering? can they be knackering?
Perfect	V-ing perfect
can I have knackered? can you have knackered? can he have knackered? can we have knackered? can you have knackered? can they have knackered?	can I have been knackering? can you have been knackering? can he have been knackering? can we have been knackering? can you have been knackering? can they have been knackering?

Interro-negative form

Simple form	V-ing form
can't I knacker? can't you knacker? can't he knacker? can't we knacker? can't you knacker? can't they knacker?	can't I be knackering? can't you be knackering? can't he be knackering? can't we be knackering? can't you be knackering? can't they be knackering?
Perfect	V-ing perfect
can't I have knackered? can't you have knackered? can't he have knackered? can't we have knackered? can't you have knackered? can't they have knackered?	can't I have been knackering? can't you have been knackering? can't he have been knackering? can't we have been knackering? can't you have been knackering? can't they have been knackering?