I must gridiron you must gridiron he must gridiron we must gridiron you must gridiron they must gridiron
Forme en V-ing
I must be gridironing you must be gridironing he must be gridironing we must be gridironing you must be gridironing they must be gridironing
Perfect
I must have gridironed you must have gridironed he must have gridironed we must have gridironed you must have gridironed they must have gridironed
Perfect en V-ing
I must have been gridironing you must have been gridironing he must have been gridironing we must have been gridironing you must have been gridironing they must have been gridironing
Négation
Forme simple
I must not gridiron you must not gridiron he must not gridiron we must not gridiron you must not gridiron they must not gridiron
Forme en V-ing
I must not be gridironing you must not be gridironing he must not be gridironing we must not be gridironing you must not be gridironing they must not be gridironing
Perfect
I must not have gridironed you must not have gridironed he must not have gridironed we must not have gridironed you must not have gridironed they must not have gridironed
Perfect en V-ing
I must not have been gridironing you must not have been gridironing he must not have been gridironing we must not have been gridironing you must not have been gridironing they must not have been gridironing
Forme interrogative
Forme simple
must I gridiron? must you gridiron? must he gridiron? must we gridiron? must you gridiron? must they gridiron?
Forme en V-ing
must I be gridironing? must you be gridironing? must he be gridironing? must we be gridironing? must you be gridironing? must they be gridironing?
Perfect
must I have gridironed? must you have gridironed? must he have gridironed? must we have gridironed? must you have gridironed? must they have gridironed?
Perfect en V-ing
must I have been gridironing? must you have been gridironing? must he have been gridironing? must we have been gridironing? must you have been gridironing? must they have been gridironing?
Forme interro-négative
Forme simple
must I not gridiron? must you not gridiron? must he not gridiron? must we not gridiron? must you not gridiron? must they not gridiron?
Forme en V-ing
must I not be gridironing? must you not be gridironing? must he not be gridironing? must we not be gridironing? must you not be gridironing? must they not be gridironing?
Perfect
must I not have gridironed? must you not have gridironed? must he not have gridironed? must we not have gridironed? must you not have gridironed? must they not have gridironed?
Perfect en V-ing
must I not have been gridironing? must you not have been gridironing? must he not have been gridironing? must we not have been gridironing? must you not have been gridironing? must they not have been gridironing?