can pump
Regular verb: pump - pumped- pumped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can pump
you can pump
she can pump
we can pump
you can pump
they can pump 	I can be pumping
you can be pumping
she can be pumping
we can be pumping
you can be pumping
they can be pumping	I can have pumped
you can have pumped
she can have pumped
we can have pumped
you can have pumped
they can have pumped	I can have been pumping
you can have been pumping
she can have been pumping
we can have been pumping
you can have been pumping
they can have been pumping	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot pump
you cannot pump
she cannot pump
we cannot pump
you cannot pump
they cannot pump 	I cannot be pumping
you cannot be pumping
she cannot be pumping
we cannot be pumping
you cannot be pumping
they cannot be pumping	I cannot have pumped
you cannot have pumped
she cannot have pumped
we cannot have pumped
you cannot have pumped
they cannot have pumped	I cannot have been pumping
you cannot have been pumping
she cannot have been pumping
we cannot have been pumping
you cannot have been pumping
they cannot have been pumping	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I pump?
can you pump?
can she pump?
can we pump?
can you pump?
can they pump? 	can I be pumping?
can you be pumping?
can she be pumping?
can we be pumping?
can you be pumping?
can they be pumping? 	can I have pumped?
can you have pumped?
can she have pumped?
can we have pumped?
can you have pumped?
can they have pumped? 	can I have been pumping?
can you have been pumping?
can she have been pumping?
can we have been pumping?
can you have been pumping?
can they have been pumping? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not pump?
can you not pump?
can she not pump?
can we not pump?
can you not pump?
can they not pump? 	can I not be pumping?
can you not be pumping?
can she not be pumping?
can we not be pumping?
can you not be pumping?
can they not be pumping? 	can I not have pumped?
can you not have pumped?
can she not have pumped?
can we not have pumped?
can you not have pumped?
can they not have pumped? 	can I not have been pumping?
can you not have been pumping?
can she not have been pumping?
can we not have been pumping?
can you not have been pumping?
can they not have been pumping?