I must scrummage you must scrummage he must scrummage we must scrummage you must scrummage they must scrummage
V-ing form
I must be scrummaging you must be scrummaging he must be scrummaging we must be scrummaging you must be scrummaging they must be scrummaging
Perfect
I must have scrummaged you must have scrummaged he must have scrummaged we must have scrummaged you must have scrummaged they must have scrummaged
V-ing perfect
I must have been scrummaging you must have been scrummaging he must have been scrummaging we must have been scrummaging you must have been scrummaging they must have been scrummaging
Negation
Simple form
I must not scrummage you must not scrummage he must not scrummage we must not scrummage you must not scrummage they must not scrummage
V-ing form
I must not be scrummaging you must not be scrummaging he must not be scrummaging we must not be scrummaging you must not be scrummaging they must not be scrummaging
Perfect
I must not have scrummaged you must not have scrummaged he must not have scrummaged we must not have scrummaged you must not have scrummaged they must not have scrummaged
V-ing perfect
I must not have been scrummaging you must not have been scrummaging he must not have been scrummaging we must not have been scrummaging you must not have been scrummaging they must not have been scrummaging
Interrogative form
Simple form
must I scrummage? must you scrummage? must he scrummage? must we scrummage? must you scrummage? must they scrummage?
V-ing form
must I be scrummaging? must you be scrummaging? must he be scrummaging? must we be scrummaging? must you be scrummaging? must they be scrummaging?
Perfect
must I have scrummaged? must you have scrummaged? must he have scrummaged? must we have scrummaged? must you have scrummaged? must they have scrummaged?
V-ing perfect
must I have been scrummaging? must you have been scrummaging? must he have been scrummaging? must we have been scrummaging? must you have been scrummaging? must they have been scrummaging?
Interro-negative form
Simple form
must I not scrummage? must you not scrummage? must he not scrummage? must we not scrummage? must you not scrummage? must they not scrummage?
V-ing form
must I not be scrummaging? must you not be scrummaging? must he not be scrummaging? must we not be scrummaging? must you not be scrummaging? must they not be scrummaging?
Perfect
must I not have scrummaged? must you not have scrummaged? must he not have scrummaged? must we not have scrummaged? must you not have scrummaged? must they not have scrummaged?
V-ing perfect
must I not have been scrummaging? must you not have been scrummaging? must he not have been scrummaging? must we not have been scrummaging? must you not have been scrummaging? must they not have been scrummaging?