I can endure you can endure she can endure we can endure you can endure they can endure
V-ing form
I can be enduring you can be enduring she can be enduring we can be enduring you can be enduring they can be enduring
Perfect
I can have endured you can have endured she can have endured we can have endured you can have endured they can have endured
V-ing perfect
I can have been enduring you can have been enduring she can have been enduring we can have been enduring you can have been enduring they can have been enduring
Negation
Simple form
I can't endure you can't endure she can't endure we can't endure you can't endure they can't endure
V-ing form
I can't be enduring you can't be enduring she can't be enduring we can't be enduring you can't be enduring they can't be enduring
Perfect
I can't have endured you can't have endured she can't have endured we can't have endured you can't have endured they can't have endured
V-ing perfect
I can't have been enduring you can't have been enduring she can't have been enduring we can't have been enduring you can't have been enduring they can't have been enduring
Interrogative form
Simple form
can I endure? can you endure? can she endure? can we endure? can you endure? can they endure?
V-ing form
can I be enduring? can you be enduring? can she be enduring? can we be enduring? can you be enduring? can they be enduring?
Perfect
can I have endured? can you have endured? can she have endured? can we have endured? can you have endured? can they have endured?
V-ing perfect
can I have been enduring? can you have been enduring? can she have been enduring? can we have been enduring? can you have been enduring? can they have been enduring?
Interro-negative form
Simple form
can't I endure? can't you endure? can't she endure? can't we endure? can't you endure? can't they endure?
V-ing form
can't I be enduring? can't you be enduring? can't she be enduring? can't we be enduring? can't you be enduring? can't they be enduring?
Perfect
can't I have endured? can't you have endured? can't she have endured? can't we have endured? can't you have endured? can't they have endured?
V-ing perfect
can't I have been enduring? can't you have been enduring? can't she have been enduring? can't we have been enduring? can't you have been enduring? can't they have been enduring?