I must elucidate you must elucidate she must elucidate we must elucidate you must elucidate they must elucidate
V-ing form
I must be elucidating you must be elucidating she must be elucidating we must be elucidating you must be elucidating they must be elucidating
Perfect
I must have elucidated you must have elucidated she 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 she 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 she 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 she 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 she 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 she 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 she elucidate? must we elucidate? must you elucidate? must they elucidate?
V-ing form
must I be elucidating? must you be elucidating? must she be elucidating? must we be elucidating? must you be elucidating? must they be elucidating?
Perfect
must I have elucidated? must you have elucidated? must she 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 she 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 she 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 she 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 she 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 she have been elucidating? mustn't we have been elucidating? mustn't you have been elucidating? mustn't they have been elucidating?