I must drag you must drag she must drag we must drag you must drag they must drag
V-ing form
I must be dragging you must be dragging she must be dragging we must be dragging you must be dragging they must be dragging
Perfect
I must have dragged you must have dragged she must have dragged we must have dragged you must have dragged they must have dragged
V-ing perfect
I must have been dragging you must have been dragging she must have been dragging we must have been dragging you must have been dragging they must have been dragging
Negation
Simple form
I must not drag you must not drag she must not drag we must not drag you must not drag they must not drag
V-ing form
I must not be dragging you must not be dragging she must not be dragging we must not be dragging you must not be dragging they must not be dragging
Perfect
I must not have dragged you must not have dragged she must not have dragged we must not have dragged you must not have dragged they must not have dragged
V-ing perfect
I must not have been dragging you must not have been dragging she must not have been dragging we must not have been dragging you must not have been dragging they must not have been dragging
Interrogative form
Simple form
must I drag? must you drag? must she drag? must we drag? must you drag? must they drag?
V-ing form
must I be dragging? must you be dragging? must she be dragging? must we be dragging? must you be dragging? must they be dragging?
Perfect
must I have dragged? must you have dragged? must she have dragged? must we have dragged? must you have dragged? must they have dragged?
V-ing perfect
must I have been dragging? must you have been dragging? must she have been dragging? must we have been dragging? must you have been dragging? must they have been dragging?
Interro-negative form
Simple form
must I not drag? must you not drag? must she not drag? must we not drag? must you not drag? must they not drag?
V-ing form
must I not be dragging? must you not be dragging? must she not be dragging? must we not be dragging? must you not be dragging? must they not be dragging?
Perfect
must I not have dragged? must you not have dragged? must she not have dragged? must we not have dragged? must you not have dragged? must they not have dragged?
V-ing perfect
must I not have been dragging? must you not have been dragging? must she not have been dragging? must we not have been dragging? must you not have been dragging? must they not have been dragging?