I can rivet you can rivet she can rivet we can rivet you can rivet they can rivet
V-ing form
I can be riveting you can be riveting she can be riveting we can be riveting you can be riveting they can be riveting
Perfect
I can have riveted you can have riveted she can have riveted we can have riveted you can have riveted they can have riveted
V-ing perfect
I can have been riveting you can have been riveting she can have been riveting we can have been riveting you can have been riveting they can have been riveting
Negation
Simple form
I cannot rivet you cannot rivet she cannot rivet we cannot rivet you cannot rivet they cannot rivet
V-ing form
I cannot be riveting you cannot be riveting she cannot be riveting we cannot be riveting you cannot be riveting they cannot be riveting
Perfect
I cannot have riveted you cannot have riveted she cannot have riveted we cannot have riveted you cannot have riveted they cannot have riveted
V-ing perfect
I cannot have been riveting you cannot have been riveting she cannot have been riveting we cannot have been riveting you cannot have been riveting they cannot have been riveting
Interrogative form
Simple form
can I rivet? can you rivet? can she rivet? can we rivet? can you rivet? can they rivet?
V-ing form
can I be riveting? can you be riveting? can she be riveting? can we be riveting? can you be riveting? can they be riveting?
Perfect
can I have riveted? can you have riveted? can she have riveted? can we have riveted? can you have riveted? can they have riveted?
V-ing perfect
can I have been riveting? can you have been riveting? can she have been riveting? can we have been riveting? can you have been riveting? can they have been riveting?
Interro-negative form
Simple form
can I not rivet? can you not rivet? can she not rivet? can we not rivet? can you not rivet? can they not rivet?
V-ing form
can I not be riveting? can you not be riveting? can she not be riveting? can we not be riveting? can you not be riveting? can they not be riveting?
Perfect
can I not have riveted? can you not have riveted? can she not have riveted? can we not have riveted? can you not have riveted? can they not have riveted?
V-ing perfect
can I not have been riveting? can you not have been riveting? can she not have been riveting? can we not have been riveting? can you not have been riveting? can they not have been riveting?