can slump
Regular verb: slump - slumped- slumped

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

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot slump
you cannot slump
he cannot slump
we cannot slump
you cannot slump
they cannot slump 	I cannot be slumping
you cannot be slumping
he cannot be slumping
we cannot be slumping
you cannot be slumping
they cannot be slumping	I cannot have slumped
you cannot have slumped
he cannot have slumped
we cannot have slumped
you cannot have slumped
they cannot have slumped	I cannot have been slumping
you cannot have been slumping
he cannot have been slumping
we cannot have been slumping
you cannot have been slumping
they cannot have been slumping	

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

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not slump?
can you not slump?
can he not slump?
can we not slump?
can you not slump?
can they not slump? 	can I not be slumping?
can you not be slumping?
can he not be slumping?
can we not be slumping?
can you not be slumping?
can they not be slumping? 	can I not have slumped?
can you not have slumped?
can he not have slumped?
can we not have slumped?
can you not have slumped?
can they not have slumped? 	can I not have been slumping?
can you not have been slumping?
can he not have been slumping?
can we not have been slumping?
can you not have been slumping?
can they not have been slumping?