English verb conjugation
MUST BOLSTER

Regular verb: bolster - bolstered - bolstered

Affirmation

Simple form	V-ing form
I must bolster you must bolster he must bolster we must bolster you must bolster they must bolster	I must be bolstering you must be bolstering he must be bolstering we must be bolstering you must be bolstering they must be bolstering
Perfect	V-ing perfect
I must have bolstered you must have bolstered he must have bolstered we must have bolstered you must have bolstered they must have bolstered	I must have been bolstering you must have been bolstering he must have been bolstering we must have been bolstering you must have been bolstering they must have been bolstering

Negation

Simple form	V-ing form
I must not bolster you must not bolster he must not bolster we must not bolster you must not bolster they must not bolster	I must not be bolstering you must not be bolstering he must not be bolstering we must not be bolstering you must not be bolstering they must not be bolstering
Perfect	V-ing perfect
I must not have bolstered you must not have bolstered he must not have bolstered we must not have bolstered you must not have bolstered they must not have bolstered	I must not have been bolstering you must not have been bolstering he must not have been bolstering we must not have been bolstering you must not have been bolstering they must not have been bolstering

Interrogative form

Simple form	V-ing form
must I bolster? must you bolster? must he bolster? must we bolster? must you bolster? must they bolster?	must I be bolstering? must you be bolstering? must he be bolstering? must we be bolstering? must you be bolstering? must they be bolstering?
Perfect	V-ing perfect
must I have bolstered? must you have bolstered? must he have bolstered? must we have bolstered? must you have bolstered? must they have bolstered?	must I have been bolstering? must you have been bolstering? must he have been bolstering? must we have been bolstering? must you have been bolstering? must they have been bolstering?

Interro-negative form

Simple form	V-ing form
must I not bolster? must you not bolster? must he not bolster? must we not bolster? must you not bolster? must they not bolster?	must I not be bolstering? must you not be bolstering? must he not be bolstering? must we not be bolstering? must you not be bolstering? must they not be bolstering?
Perfect	V-ing perfect
must I not have bolstered? must you not have bolstered? must he not have bolstered? must we not have bolstered? must you not have bolstered? must they not have bolstered?	must I not have been bolstering? must you not have been bolstering? must he not have been bolstering? must we not have been bolstering? must you not have been bolstering? must they not have been bolstering?