I can blink you can blink he can blink we can blink you can blink they can blink
V-ing form
I can be blinking you can be blinking he can be blinking we can be blinking you can be blinking they can be blinking
Perfect
I can have blinked you can have blinked he can have blinked we can have blinked you can have blinked they can have blinked
V-ing perfect
I can have been blinking you can have been blinking he can have been blinking we can have been blinking you can have been blinking they can have been blinking
Negation
Simple form
I cannot blink you cannot blink he cannot blink we cannot blink you cannot blink they cannot blink
V-ing form
I cannot be blinking you cannot be blinking he cannot be blinking we cannot be blinking you cannot be blinking they cannot be blinking
Perfect
I cannot have blinked you cannot have blinked he cannot have blinked we cannot have blinked you cannot have blinked they cannot have blinked
V-ing perfect
I cannot have been blinking you cannot have been blinking he cannot have been blinking we cannot have been blinking you cannot have been blinking they cannot have been blinking
Interrogative form
Simple form
can I blink? can you blink? can he blink? can we blink? can you blink? can they blink?
V-ing form
can I be blinking? can you be blinking? can he be blinking? can we be blinking? can you be blinking? can they be blinking?
Perfect
can I have blinked? can you have blinked? can he have blinked? can we have blinked? can you have blinked? can they have blinked?
V-ing perfect
can I have been blinking? can you have been blinking? can he have been blinking? can we have been blinking? can you have been blinking? can they have been blinking?
Interro-negative form
Simple form
can I not blink? can you not blink? can he not blink? can we not blink? can you not blink? can they not blink?
V-ing form
can I not be blinking? can you not be blinking? can he not be blinking? can we not be blinking? can you not be blinking? can they not be blinking?
Perfect
can I not have blinked? can you not have blinked? can he not have blinked? can we not have blinked? can you not have blinked? can they not have blinked?
V-ing perfect
can I not have been blinking? can you not have been blinking? can he not have been blinking? can we not have been blinking? can you not have been blinking? can they not have been blinking?