English verb conjugation
CAN PLUMPEN

Regular verb: plumpen - plumpened - plumpened

Affirmation

Simple form	V-ing form
I can plumpen you can plumpen she can plumpen we can plumpen you can plumpen they can plumpen	I can be plumpening you can be plumpening she can be plumpening we can be plumpening you can be plumpening they can be plumpening
Perfect	V-ing perfect
I can have plumpened you can have plumpened she can have plumpened we can have plumpened you can have plumpened they can have plumpened	I can have been plumpening you can have been plumpening she can have been plumpening we can have been plumpening you can have been plumpening they can have been plumpening

Negation

Simple form	V-ing form
I cannot plumpen you cannot plumpen she cannot plumpen we cannot plumpen you cannot plumpen they cannot plumpen	I cannot be plumpening you cannot be plumpening she cannot be plumpening we cannot be plumpening you cannot be plumpening they cannot be plumpening
Perfect	V-ing perfect
I cannot have plumpened you cannot have plumpened she cannot have plumpened we cannot have plumpened you cannot have plumpened they cannot have plumpened	I cannot have been plumpening you cannot have been plumpening she cannot have been plumpening we cannot have been plumpening you cannot have been plumpening they cannot have been plumpening

Interrogative form

Simple form	V-ing form
can I plumpen? can you plumpen? can she plumpen? can we plumpen? can you plumpen? can they plumpen?	can I be plumpening? can you be plumpening? can she be plumpening? can we be plumpening? can you be plumpening? can they be plumpening?
Perfect	V-ing perfect
can I have plumpened? can you have plumpened? can she have plumpened? can we have plumpened? can you have plumpened? can they have plumpened?	can I have been plumpening? can you have been plumpening? can she have been plumpening? can we have been plumpening? can you have been plumpening? can they have been plumpening?

Interro-negative form

Simple form	V-ing form
can I not plumpen? can you not plumpen? can she not plumpen? can we not plumpen? can you not plumpen? can they not plumpen?	can I not be plumpening? can you not be plumpening? can she not be plumpening? can we not be plumpening? can you not be plumpening? can they not be plumpening?
Perfect	V-ing perfect
can I not have plumpened? can you not have plumpened? can she not have plumpened? can we not have plumpened? can you not have plumpened? can they not have plumpened?	can I not have been plumpening? can you not have been plumpening? can she not have been plumpening? can we not have been plumpening? can you not have been plumpening? can they not have been plumpening?