English verb conjugation
CAN BOLSTER

Regular verb: bolster - bolstered - bolstered

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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