English verb conjugation
COULD SLUMP

Regular verb: slump - slumped - slumped

Affirmation

Simple form	V-ing form
I could slump you could slump he could slump we could slump you could slump they could slump	I could be slumping you could be slumping he could be slumping we could be slumping you could be slumping they could be slumping
Perfect	V-ing perfect
I could have slumped you could have slumped he could have slumped we could have slumped you could have slumped they could have slumped	I could have been slumping you could have been slumping he could have been slumping we could have been slumping you could have been slumping they could have been slumping

Negation

Simple form	V-ing form
I couldn't slump you couldn't slump he couldn't slump we couldn't slump you couldn't slump they couldn't slump	I couldn't be slumping you couldn't be slumping he couldn't be slumping we couldn't be slumping you couldn't be slumping they couldn't be slumping
Perfect	V-ing perfect
I couldn't have slumped you couldn't have slumped he couldn't have slumped we couldn't have slumped you couldn't have slumped they couldn't have slumped	I couldn't have been slumping you couldn't have been slumping he couldn't have been slumping we couldn't have been slumping you couldn't have been slumping they couldn't have been slumping

Interrogative form

Simple form	V-ing form
could I slump? could you slump? could he slump? could we slump? could you slump? could they slump?	could I be slumping? could you be slumping? could he be slumping? could we be slumping? could you be slumping? could they be slumping?
Perfect	V-ing perfect
could I have slumped? could you have slumped? could he have slumped? could we have slumped? could you have slumped? could they have slumped?	could I have been slumping? could you have been slumping? could he have been slumping? could we have been slumping? could you have been slumping? could they have been slumping?

Interro-negative form

Simple form	V-ing form
couldn't I slump? couldn't you slump? couldn't he slump? couldn't we slump? couldn't you slump? couldn't they slump?	couldn't I be slumping? couldn't you be slumping? couldn't he be slumping? couldn't we be slumping? couldn't you be slumping? couldn't they be slumping?
Perfect	V-ing perfect
couldn't I have slumped? couldn't you have slumped? couldn't he have slumped? couldn't we have slumped? couldn't you have slumped? couldn't they have slumped?	couldn't I have been slumping? couldn't you have been slumping? couldn't he have been slumping? couldn't we have been slumping? couldn't you have been slumping? couldn't they have been slumping?