I can asseverate you can asseverate she can asseverate we can asseverate you can asseverate they can asseverate
V-ing form
I can be asseverating you can be asseverating she can be asseverating we can be asseverating you can be asseverating they can be asseverating
Perfect
I can have asseverated you can have asseverated she can have asseverated we can have asseverated you can have asseverated they can have asseverated
V-ing perfect
I can have been asseverating you can have been asseverating she can have been asseverating we can have been asseverating you can have been asseverating they can have been asseverating
Negation
Simple form
I cannot asseverate you cannot asseverate she cannot asseverate we cannot asseverate you cannot asseverate they cannot asseverate
V-ing form
I cannot be asseverating you cannot be asseverating she cannot be asseverating we cannot be asseverating you cannot be asseverating they cannot be asseverating
Perfect
I cannot have asseverated you cannot have asseverated she cannot have asseverated we cannot have asseverated you cannot have asseverated they cannot have asseverated
V-ing perfect
I cannot have been asseverating you cannot have been asseverating she cannot have been asseverating we cannot have been asseverating you cannot have been asseverating they cannot have been asseverating
Interrogative form
Simple form
can I asseverate? can you asseverate? can she asseverate? can we asseverate? can you asseverate? can they asseverate?
V-ing form
can I be asseverating? can you be asseverating? can she be asseverating? can we be asseverating? can you be asseverating? can they be asseverating?
Perfect
can I have asseverated? can you have asseverated? can she have asseverated? can we have asseverated? can you have asseverated? can they have asseverated?
V-ing perfect
can I have been asseverating? can you have been asseverating? can she have been asseverating? can we have been asseverating? can you have been asseverating? can they have been asseverating?
Interro-negative form
Simple form
can I not asseverate? can you not asseverate? can she not asseverate? can we not asseverate? can you not asseverate? can they not asseverate?
V-ing form
can I not be asseverating? can you not be asseverating? can she not be asseverating? can we not be asseverating? can you not be asseverating? can they not be asseverating?
Perfect
can I not have asseverated? can you not have asseverated? can she not have asseverated? can we not have asseverated? can you not have asseverated? can they not have asseverated?
V-ing perfect
can I not have been asseverating? can you not have been asseverating? can she not have been asseverating? can we not have been asseverating? can you not have been asseverating? can they not have been asseverating?