can ump
Regular verb: ump - umped- umped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can ump
you can ump
he can ump
we can ump
you can ump
they can ump 	I can be umping
you can be umping
he can be umping
we can be umping
you can be umping
they can be umping	I can have umped
you can have umped
he can have umped
we can have umped
you can have umped
they can have umped	I can have been umping
you can have been umping
he can have been umping
we can have been umping
you can have been umping
they can have been umping	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't ump
you can't ump
he can't ump
we can't ump
you can't ump
they can't ump 	I can't be umping
you can't be umping
he can't be umping
we can't be umping
you can't be umping
they can't be umping	I can't have umped
you can't have umped
he can't have umped
we can't have umped
you can't have umped
they can't have umped	I can't have been umping
you can't have been umping
he can't have been umping
we can't have been umping
you can't have been umping
they can't have been umping	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I ump?
can you ump?
can he ump?
can we ump?
can you ump?
can they ump? 	can I be umping?
can you be umping?
can he be umping?
can we be umping?
can you be umping?
can they be umping? 	can I have umped?
can you have umped?
can he have umped?
can we have umped?
can you have umped?
can they have umped? 	can I have been umping?
can you have been umping?
can he have been umping?
can we have been umping?
can you have been umping?
can they have been umping? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I ump?
can't you ump?
can't he ump?
can't we ump?
can't you ump?
can't they ump? 	can't I be umping?
can't you be umping?
can't he be umping?
can't we be umping?
can't you be umping?
can't they be umping? 	can't I have umped?
can't you have umped?
can't he have umped?
can't we have umped?
can't you have umped?
can't they have umped? 	can't I have been umping?
can't you have been umping?
can't he have been umping?
can't we have been umping?
can't you have been umping?
can't they have been umping?