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 could not slather you could not slather he could not slather we could not slather you could not slather they could not slather	I could not be slathering you could not be slathering he could not be slathering we could not be slathering you could not be slathering they could not be slathering
Perfect	V-ing perfect
I could not have slathered you could not have slathered he could not have slathered we could not have slathered you could not have slathered they could not have slathered	I could not have been slathering you could not have been slathering he could not have been slathering we could not have been slathering you could not have been slathering they could not 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
could I not slather? could you not slather? could he not slather? could we not slather? could you not slather? could they not slather?	could I not be slathering? could you not be slathering? could he not be slathering? could we not be slathering? could you not be slathering? could they not be slathering?
Perfect	V-ing perfect
could I not have slathered? could you not have slathered? could he not have slathered? could we not have slathered? could you not have slathered? could they not have slathered?	could I not have been slathering? could you not have been slathering? could he not have been slathering? could we not have been slathering? could you not have been slathering? could they not have been slathering?