English verb conjugation
CAN UMP

Regular verb: ump - umped - umped

Affirmation

Simple form	V-ing form
I can ump you can ump she can ump we can ump you can ump they can ump	I can be umping you can be umping she 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 she 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 she 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 cannot ump you cannot ump she cannot ump we cannot ump you cannot ump they cannot ump	I cannot be umping you cannot be umping she cannot be umping we cannot be umping you cannot be umping they cannot be umping
Perfect	V-ing perfect
I cannot have umped you cannot have umped she cannot have umped we cannot have umped you cannot have umped they cannot have umped	I cannot have been umping you cannot have been umping she cannot have been umping we cannot have been umping you cannot have been umping they cannot have been umping

Interrogative form

Simple form	V-ing form
can I ump? can you ump? can she ump? can we ump? can you ump? can they ump?	can I be umping? can you be umping? can she 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 she 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 she 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 I not ump? can you not ump? can she not ump? can we not ump? can you not ump? can they not ump?	can I not be umping? can you not be umping? can she not be umping? can we not be umping? can you not be umping? can they not be umping?
Perfect	V-ing perfect
can I not have umped? can you not have umped? can she not have umped? can we not have umped? can you not have umped? can they not have umped?	can I not have been umping? can you not have been umping? can she not have been umping? can we not have been umping? can you not have been umping? can they not have been umping?