I must blink you must blink she must blink we must blink you must blink they must blink
V-ing form
I must be blinking you must be blinking she must be blinking we must be blinking you must be blinking they must be blinking
Perfect
I must have blinked you must have blinked she must have blinked we must have blinked you must have blinked they must have blinked
V-ing perfect
I must have been blinking you must have been blinking she must have been blinking we must have been blinking you must have been blinking they must have been blinking
Negation
Simple form
I mustn't blink you mustn't blink she mustn't blink we mustn't blink you mustn't blink they mustn't blink
V-ing form
I mustn't be blinking you mustn't be blinking she mustn't be blinking we mustn't be blinking you mustn't be blinking they mustn't be blinking
Perfect
I mustn't have blinked you mustn't have blinked she mustn't have blinked we mustn't have blinked you mustn't have blinked they mustn't have blinked
V-ing perfect
I mustn't have been blinking you mustn't have been blinking she mustn't have been blinking we mustn't have been blinking you mustn't have been blinking they mustn't have been blinking
Interrogative form
Simple form
must I blink? must you blink? must she blink? must we blink? must you blink? must they blink?
V-ing form
must I be blinking? must you be blinking? must she be blinking? must we be blinking? must you be blinking? must they be blinking?
Perfect
must I have blinked? must you have blinked? must she have blinked? must we have blinked? must you have blinked? must they have blinked?
V-ing perfect
must I have been blinking? must you have been blinking? must she have been blinking? must we have been blinking? must you have been blinking? must they have been blinking?
Interro-negative form
Simple form
mustn't I blink? mustn't you blink? mustn't she blink? mustn't we blink? mustn't you blink? mustn't they blink?
V-ing form
mustn't I be blinking? mustn't you be blinking? mustn't she be blinking? mustn't we be blinking? mustn't you be blinking? mustn't they be blinking?
Perfect
mustn't I have blinked? mustn't you have blinked? mustn't she have blinked? mustn't we have blinked? mustn't you have blinked? mustn't they have blinked?
V-ing perfect
mustn't I have been blinking? mustn't you have been blinking? mustn't she have been blinking? mustn't we have been blinking? mustn't you have been blinking? mustn't they have been blinking?