English verb conjugation
CAN UMP

Regular verb: ump - umped - umped

Affirmation

Simple form	V-ing form
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
Perfect	V-ing perfect
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
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
Perfect	V-ing perfect
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
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?
Perfect	V-ing perfect
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
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?
Perfect	V-ing perfect
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?