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 can't bolster you can't bolster he can't bolster we can't bolster you can't bolster they can't bolster	I can't be bolstering you can't be bolstering he can't be bolstering we can't be bolstering you can't be bolstering they can't be bolstering
Perfect	V-ing perfect
I can't have bolstered you can't have bolstered he can't have bolstered we can't have bolstered you can't have bolstered they can't have bolstered	I can't have been bolstering you can't have been bolstering he can't have been bolstering we can't have been bolstering you can't have been bolstering they can't 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't I bolster? can't you bolster? can't he bolster? can't we bolster? can't you bolster? can't they bolster?	can't I be bolstering? can't you be bolstering? can't he be bolstering? can't we be bolstering? can't you be bolstering? can't they be bolstering?
Perfect	V-ing perfect
can't I have bolstered? can't you have bolstered? can't he have bolstered? can't we have bolstered? can't you have bolstered? can't they have bolstered?	can't I have been bolstering? can't you have been bolstering? can't he have been bolstering? can't we have been bolstering? can't you have been bolstering? can't they have been bolstering?