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 can't blink you can't blink he can't blink we can't blink you can't blink they can't blink
V-ing form
I can't be blinking you can't be blinking he can't be blinking we can't be blinking you can't be blinking they can't be blinking
Perfect
I can't have blinked you can't have blinked he can't have blinked we can't have blinked you can't have blinked they can't have blinked
V-ing perfect
I can't have been blinking you can't have been blinking he can't have been blinking we can't have been blinking you can't have been blinking they can't 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't I blink? can't you blink? can't he blink? can't we blink? can't you blink? can't they blink?
V-ing form
can't I be blinking? can't you be blinking? can't he be blinking? can't we be blinking? can't you be blinking? can't they be blinking?
Perfect
can't I have blinked? can't you have blinked? can't he have blinked? can't we have blinked? can't you have blinked? can't they have blinked?
V-ing perfect
can't I have been blinking? can't you have been blinking? can't he have been blinking? can't we have been blinking? can't you have been blinking? can't they have been blinking?