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 must not elucidate you must not elucidate he must not elucidate we must not elucidate you must not elucidate they must not elucidate
V-ing form
I must not be elucidating you must not be elucidating he must not be elucidating we must not be elucidating you must not be elucidating they must not be elucidating
Perfect
I must not have elucidated you must not have elucidated he must not have elucidated we must not have elucidated you must not have elucidated they must not have elucidated
V-ing perfect
I must not have been elucidating you must not have been elucidating he must not have been elucidating we must not have been elucidating you must not have been elucidating they must not 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
must I not elucidate? must you not elucidate? must he not elucidate? must we not elucidate? must you not elucidate? must they not elucidate?
V-ing form
must I not be elucidating? must you not be elucidating? must he not be elucidating? must we not be elucidating? must you not be elucidating? must they not be elucidating?
Perfect
must I not have elucidated? must you not have elucidated? must he not have elucidated? must we not have elucidated? must you not have elucidated? must they not have elucidated?
V-ing perfect
must I not have been elucidating? must you not have been elucidating? must he not have been elucidating? must we not have been elucidating? must you not have been elucidating? must they not have been elucidating?