I can last you can last she can last we can last you can last they can last
V-ing form
I can be lasting you can be lasting she can be lasting we can be lasting you can be lasting they can be lasting
Perfect
I can have lasted you can have lasted she can have lasted we can have lasted you can have lasted they can have lasted
V-ing perfect
I can have been lasting you can have been lasting she can have been lasting we can have been lasting you can have been lasting they can have been lasting
Negation
Simple form
I cannot last you cannot last she cannot last we cannot last you cannot last they cannot last
V-ing form
I cannot be lasting you cannot be lasting she cannot be lasting we cannot be lasting you cannot be lasting they cannot be lasting
Perfect
I cannot have lasted you cannot have lasted she cannot have lasted we cannot have lasted you cannot have lasted they cannot have lasted
V-ing perfect
I cannot have been lasting you cannot have been lasting she cannot have been lasting we cannot have been lasting you cannot have been lasting they cannot have been lasting
Interrogative form
Simple form
can I last? can you last? can she last? can we last? can you last? can they last?
V-ing form
can I be lasting? can you be lasting? can she be lasting? can we be lasting? can you be lasting? can they be lasting?
Perfect
can I have lasted? can you have lasted? can she have lasted? can we have lasted? can you have lasted? can they have lasted?
V-ing perfect
can I have been lasting? can you have been lasting? can she have been lasting? can we have been lasting? can you have been lasting? can they have been lasting?
Interro-negative form
Simple form
can I not last? can you not last? can she not last? can we not last? can you not last? can they not last?
V-ing form
can I not be lasting? can you not be lasting? can she not be lasting? can we not be lasting? can you not be lasting? can they not be lasting?
Perfect
can I not have lasted? can you not have lasted? can she not have lasted? can we not have lasted? can you not have lasted? can they not have lasted?
V-ing perfect
can I not have been lasting? can you not have been lasting? can she not have been lasting? can we not have been lasting? can you not have been lasting? can they not have been lasting?