English verb conjugation
COULD BLINK

Regular verb: blink - blinked - blinked

Affirmation

Simple form	V-ing form
I could blink you could blink she could blink we could blink you could blink they could blink	I could be blinking you could be blinking she could be blinking we could be blinking you could be blinking they could be blinking
Perfect	V-ing perfect
I could have blinked you could have blinked she could have blinked we could have blinked you could have blinked they could have blinked	I could have been blinking you could have been blinking she could have been blinking we could have been blinking you could have been blinking they could have been blinking

Negation

Simple form	V-ing form
I couldn't blink you couldn't blink she couldn't blink we couldn't blink you couldn't blink they couldn't blink	I couldn't be blinking you couldn't be blinking she couldn't be blinking we couldn't be blinking you couldn't be blinking they couldn't be blinking
Perfect	V-ing perfect
I couldn't have blinked you couldn't have blinked she couldn't have blinked we couldn't have blinked you couldn't have blinked they couldn't have blinked	I couldn't have been blinking you couldn't have been blinking she couldn't have been blinking we couldn't have been blinking you couldn't have been blinking they couldn't have been blinking

Interrogative form

Simple form	V-ing form
could I blink? could you blink? could she blink? could we blink? could you blink? could they blink?	could I be blinking? could you be blinking? could she be blinking? could we be blinking? could you be blinking? could they be blinking?
Perfect	V-ing perfect
could I have blinked? could you have blinked? could she have blinked? could we have blinked? could you have blinked? could they have blinked?	could I have been blinking? could you have been blinking? could she have been blinking? could we have been blinking? could you have been blinking? could they have been blinking?

Interro-negative form

Simple form	V-ing form
couldn't I blink? couldn't you blink? couldn't she blink? couldn't we blink? couldn't you blink? couldn't they blink?	couldn't I be blinking? couldn't you be blinking? couldn't she be blinking? couldn't we be blinking? couldn't you be blinking? couldn't they be blinking?
Perfect	V-ing perfect
couldn't I have blinked? couldn't you have blinked? couldn't she have blinked? couldn't we have blinked? couldn't you have blinked? couldn't they have blinked?	couldn't I have been blinking? couldn't you have been blinking? couldn't she have been blinking? couldn't we have been blinking? couldn't you have been blinking? couldn't they have been blinking?