I can quiet you can quiet he can quiet we can quiet you can quiet they can quiet
V-ing form
I can be quieting you can be quieting he can be quieting we can be quieting you can be quieting they can be quieting
Perfect
I can have quieted you can have quieted he can have quieted we can have quieted you can have quieted they can have quieted
V-ing perfect
I can have been quieting you can have been quieting he can have been quieting we can have been quieting you can have been quieting they can have been quieting
Negation
Simple form
I cannot quiet you cannot quiet he cannot quiet we cannot quiet you cannot quiet they cannot quiet
V-ing form
I cannot be quieting you cannot be quieting he cannot be quieting we cannot be quieting you cannot be quieting they cannot be quieting
Perfect
I cannot have quieted you cannot have quieted he cannot have quieted we cannot have quieted you cannot have quieted they cannot have quieted
V-ing perfect
I cannot have been quieting you cannot have been quieting he cannot have been quieting we cannot have been quieting you cannot have been quieting they cannot have been quieting
Interrogative form
Simple form
can I quiet? can you quiet? can he quiet? can we quiet? can you quiet? can they quiet?
V-ing form
can I be quieting? can you be quieting? can he be quieting? can we be quieting? can you be quieting? can they be quieting?
Perfect
can I have quieted? can you have quieted? can he have quieted? can we have quieted? can you have quieted? can they have quieted?
V-ing perfect
can I have been quieting? can you have been quieting? can he have been quieting? can we have been quieting? can you have been quieting? can they have been quieting?
Interro-negative form
Simple form
can I not quiet? can you not quiet? can he not quiet? can we not quiet? can you not quiet? can they not quiet?
V-ing form
can I not be quieting? can you not be quieting? can he not be quieting? can we not be quieting? can you not be quieting? can they not be quieting?
Perfect
can I not have quieted? can you not have quieted? can he not have quieted? can we not have quieted? can you not have quieted? can they not have quieted?
V-ing perfect
can I not have been quieting? can you not have been quieting? can he not have been quieting? can we not have been quieting? can you not have been quieting? can they not have been quieting?