English verb conjugation
MUST BLUSH

Regular verb: blush - blushed - blushed

Affirmation

Simple form	V-ing form
I must blush you must blush he must blush we must blush you must blush they must blush	I must be blushing you must be blushing he must be blushing we must be blushing you must be blushing they must be blushing
Perfect	V-ing perfect
I must have blushed you must have blushed he must have blushed we must have blushed you must have blushed they must have blushed	I must have been blushing you must have been blushing he must have been blushing we must have been blushing you must have been blushing they must have been blushing

Negation

Simple form	V-ing form
I must not blush you must not blush he must not blush we must not blush you must not blush they must not blush	I must not be blushing you must not be blushing he must not be blushing we must not be blushing you must not be blushing they must not be blushing
Perfect	V-ing perfect
I must not have blushed you must not have blushed he must not have blushed we must not have blushed you must not have blushed they must not have blushed	I must not have been blushing you must not have been blushing he must not have been blushing we must not have been blushing you must not have been blushing they must not have been blushing

Interrogative form

Simple form	V-ing form
must I blush? must you blush? must he blush? must we blush? must you blush? must they blush?	must I be blushing? must you be blushing? must he be blushing? must we be blushing? must you be blushing? must they be blushing?
Perfect	V-ing perfect
must I have blushed? must you have blushed? must he have blushed? must we have blushed? must you have blushed? must they have blushed?	must I have been blushing? must you have been blushing? must he have been blushing? must we have been blushing? must you have been blushing? must they have been blushing?

Interro-negative form

Simple form	V-ing form
must I not blush? must you not blush? must he not blush? must we not blush? must you not blush? must they not blush?	must I not be blushing? must you not be blushing? must he not be blushing? must we not be blushing? must you not be blushing? must they not be blushing?
Perfect	V-ing perfect
must I not have blushed? must you not have blushed? must he not have blushed? must we not have blushed? must you not have blushed? must they not have blushed?	must I not have been blushing? must you not have been blushing? must he not have been blushing? must we not have been blushing? must you not have been blushing? must they not have been blushing?