I must illuminate you must illuminate he must illuminate we must illuminate you must illuminate they must illuminate
V-ing form
I must be illuminating you must be illuminating he must be illuminating we must be illuminating you must be illuminating they must be illuminating
Perfect
I must have illuminated you must have illuminated he must have illuminated we must have illuminated you must have illuminated they must have illuminated
V-ing perfect
I must have been illuminating you must have been illuminating he must have been illuminating we must have been illuminating you must have been illuminating they must have been illuminating
Negation
Simple form
I mustn't illuminate you mustn't illuminate he mustn't illuminate we mustn't illuminate you mustn't illuminate they mustn't illuminate
V-ing form
I mustn't be illuminating you mustn't be illuminating he mustn't be illuminating we mustn't be illuminating you mustn't be illuminating they mustn't be illuminating
Perfect
I mustn't have illuminated you mustn't have illuminated he mustn't have illuminated we mustn't have illuminated you mustn't have illuminated they mustn't have illuminated
V-ing perfect
I mustn't have been illuminating you mustn't have been illuminating he mustn't have been illuminating we mustn't have been illuminating you mustn't have been illuminating they mustn't have been illuminating
Interrogative form
Simple form
must I illuminate? must you illuminate? must he illuminate? must we illuminate? must you illuminate? must they illuminate?
V-ing form
must I be illuminating? must you be illuminating? must he be illuminating? must we be illuminating? must you be illuminating? must they be illuminating?
Perfect
must I have illuminated? must you have illuminated? must he have illuminated? must we have illuminated? must you have illuminated? must they have illuminated?
V-ing perfect
must I have been illuminating? must you have been illuminating? must he have been illuminating? must we have been illuminating? must you have been illuminating? must they have been illuminating?
Interro-negative form
Simple form
mustn't I illuminate? mustn't you illuminate? mustn't he illuminate? mustn't we illuminate? mustn't you illuminate? mustn't they illuminate?
V-ing form
mustn't I be illuminating? mustn't you be illuminating? mustn't he be illuminating? mustn't we be illuminating? mustn't you be illuminating? mustn't they be illuminating?
Perfect
mustn't I have illuminated? mustn't you have illuminated? mustn't he have illuminated? mustn't we have illuminated? mustn't you have illuminated? mustn't they have illuminated?
V-ing perfect
mustn't I have been illuminating? mustn't you have been illuminating? mustn't he have been illuminating? mustn't we have been illuminating? mustn't you have been illuminating? mustn't they have been illuminating?