English verb conjugation
CAN PLUMPEN

Regular verb: plumpen - plumpened - plumpened

Affirmation

Simple form	V-ing form
I can plumpen you can plumpen he can plumpen we can plumpen you can plumpen they can plumpen	I can be plumpening you can be plumpening he 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 he 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 he 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 he cannot plumpen we cannot plumpen you cannot plumpen they cannot plumpen	I cannot be plumpening you cannot be plumpening he 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 he 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 he 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 he plumpen? can we plumpen? can you plumpen? can they plumpen?	can I be plumpening? can you be plumpening? can he 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 he 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 he 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 he 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 he 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 he 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 he not have been plumpening? can we not have been plumpening? can you not have been plumpening? can they not have been plumpening?