English verb conjugation
COULD SLATHER

Regular verb: slather - slathered - slathered

Affirmation

Simple form	V-ing form
I could slather you could slather he could slather we could slather you could slather they could slather	I could be slathering you could be slathering he could be slathering we could be slathering you could be slathering they could be slathering
Perfect	V-ing perfect
I could have slathered you could have slathered he could have slathered we could have slathered you could have slathered they could have slathered	I could have been slathering you could have been slathering he could have been slathering we could have been slathering you could have been slathering they could have been slathering

Negation

Simple form	V-ing form
I couldn't slather you couldn't slather he couldn't slather we couldn't slather you couldn't slather they couldn't slather	I couldn't be slathering you couldn't be slathering he couldn't be slathering we couldn't be slathering you couldn't be slathering they couldn't be slathering
Perfect	V-ing perfect
I couldn't have slathered you couldn't have slathered he couldn't have slathered we couldn't have slathered you couldn't have slathered they couldn't have slathered	I couldn't have been slathering you couldn't have been slathering he couldn't have been slathering we couldn't have been slathering you couldn't have been slathering they couldn't have been slathering

Interrogative form

Simple form	V-ing form
could I slather? could you slather? could he slather? could we slather? could you slather? could they slather?	could I be slathering? could you be slathering? could he be slathering? could we be slathering? could you be slathering? could they be slathering?
Perfect	V-ing perfect
could I have slathered? could you have slathered? could he have slathered? could we have slathered? could you have slathered? could they have slathered?	could I have been slathering? could you have been slathering? could he have been slathering? could we have been slathering? could you have been slathering? could they have been slathering?

Interro-negative form

Simple form	V-ing form
couldn't I slather? couldn't you slather? couldn't he slather? couldn't we slather? couldn't you slather? couldn't they slather?	couldn't I be slathering? couldn't you be slathering? couldn't he be slathering? couldn't we be slathering? couldn't you be slathering? couldn't they be slathering?
Perfect	V-ing perfect
couldn't I have slathered? couldn't you have slathered? couldn't he have slathered? couldn't we have slathered? couldn't you have slathered? couldn't they have slathered?	couldn't I have been slathering? couldn't you have been slathering? couldn't he have been slathering? couldn't we have been slathering? couldn't you have been slathering? couldn't they have been slathering?