English verb conjugation
MUST PLUMPEN

Regular verb: plumpen - plumpened - plumpened

Affirmation

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

Negation

Simple form	V-ing form
I must not plumpen you must not plumpen he must not plumpen we must not plumpen you must not plumpen they must not plumpen	I must not be plumpening you must not be plumpening he must not be plumpening we must not be plumpening you must not be plumpening they must not be plumpening
Perfect	V-ing perfect
I must not have plumpened you must not have plumpened he must not have plumpened we must not have plumpened you must not have plumpened they must not have plumpened	I must not have been plumpening you must not have been plumpening he must not have been plumpening we must not have been plumpening you must not have been plumpening they must not have been plumpening

Interrogative form

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

Interro-negative form

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