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