I must drag you must drag he must drag we must drag you must drag they must drag
V-ing form
I must be dragging you must be dragging he must be dragging we must be dragging you must be dragging they must be dragging
Perfect
I must have dragged you must have dragged he 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 he must have been dragging we must have been dragging you must have been dragging they must have been dragging
Negation
Simple form
I mustn't drag you mustn't drag he mustn't drag we mustn't drag you mustn't drag they mustn't drag
V-ing form
I mustn't be dragging you mustn't be dragging he mustn't be dragging we mustn't be dragging you mustn't be dragging they mustn't be dragging
Perfect
I mustn't have dragged you mustn't have dragged he mustn't have dragged we mustn't have dragged you mustn't have dragged they mustn't have dragged
V-ing perfect
I mustn't have been dragging you mustn't have been dragging he mustn't have been dragging we mustn't have been dragging you mustn't have been dragging they mustn't have been dragging
Interrogative form
Simple form
must I drag? must you drag? must he drag? must we drag? must you drag? must they drag?
V-ing form
must I be dragging? must you be dragging? must he be dragging? must we be dragging? must you be dragging? must they be dragging?
Perfect
must I have dragged? must you have dragged? must he 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 he have been dragging? must we have been dragging? must you have been dragging? must they have been dragging?
Interro-negative form
Simple form
mustn't I drag? mustn't you drag? mustn't he drag? mustn't we drag? mustn't you drag? mustn't they drag?
V-ing form
mustn't I be dragging? mustn't you be dragging? mustn't he be dragging? mustn't we be dragging? mustn't you be dragging? mustn't they be dragging?
Perfect
mustn't I have dragged? mustn't you have dragged? mustn't he have dragged? mustn't we have dragged? mustn't you have dragged? mustn't they have dragged?
V-ing perfect
mustn't I have been dragging? mustn't you have been dragging? mustn't he have been dragging? mustn't we have been dragging? mustn't you have been dragging? mustn't they have been dragging?