I must arrange you must arrange she must arrange we must arrange you must arrange they must arrange
V-ing form
I must be arranging you must be arranging she must be arranging we must be arranging you must be arranging they must be arranging
Perfect
I must have arranged you must have arranged she must have arranged we must have arranged you must have arranged they must have arranged
V-ing perfect
I must have been arranging you must have been arranging she must have been arranging we must have been arranging you must have been arranging they must have been arranging
Negation
Simple form
I must not arrange you must not arrange she must not arrange we must not arrange you must not arrange they must not arrange
V-ing form
I must not be arranging you must not be arranging she must not be arranging we must not be arranging you must not be arranging they must not be arranging
Perfect
I must not have arranged you must not have arranged she must not have arranged we must not have arranged you must not have arranged they must not have arranged
V-ing perfect
I must not have been arranging you must not have been arranging she must not have been arranging we must not have been arranging you must not have been arranging they must not have been arranging
Interrogative form
Simple form
must I arrange? must you arrange? must she arrange? must we arrange? must you arrange? must they arrange?
V-ing form
must I be arranging? must you be arranging? must she be arranging? must we be arranging? must you be arranging? must they be arranging?
Perfect
must I have arranged? must you have arranged? must she have arranged? must we have arranged? must you have arranged? must they have arranged?
V-ing perfect
must I have been arranging? must you have been arranging? must she have been arranging? must we have been arranging? must you have been arranging? must they have been arranging?
Interro-negative form
Simple form
must I not arrange? must you not arrange? must she not arrange? must we not arrange? must you not arrange? must they not arrange?
V-ing form
must I not be arranging? must you not be arranging? must she not be arranging? must we not be arranging? must you not be arranging? must they not be arranging?
Perfect
must I not have arranged? must you not have arranged? must she not have arranged? must we not have arranged? must you not have arranged? must they not have arranged?
V-ing perfect
must I not have been arranging? must you not have been arranging? must she not have been arranging? must we not have been arranging? must you not have been arranging? must they not have been arranging?