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 cannot endure you cannot endure she cannot endure we cannot endure you cannot endure they cannot endure
V-ing form
I cannot be enduring you cannot be enduring she cannot be enduring we cannot be enduring you cannot be enduring they cannot be enduring
Perfect
I cannot have endured you cannot have endured she cannot have endured we cannot have endured you cannot have endured they cannot have endured
V-ing perfect
I cannot have been enduring you cannot have been enduring she cannot have been enduring we cannot have been enduring you cannot have been enduring they cannot 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 I not endure? can you not endure? can she not endure? can we not endure? can you not endure? can they not endure?
V-ing form
can I not be enduring? can you not be enduring? can she not be enduring? can we not be enduring? can you not be enduring? can they not be enduring?
Perfect
can I not have endured? can you not have endured? can she not have endured? can we not have endured? can you not have endured? can they not have endured?
V-ing perfect
can I not have been enduring? can you not have been enduring? can she not have been enduring? can we not have been enduring? can you not have been enduring? can they not have been enduring?