I must cage you must cage he must cage we must cage you must cage they must cage
V-ing form
I must be caging you must be caging he must be caging we must be caging you must be caging they must be caging
Perfect
I must have caged you must have caged he must have caged we must have caged you must have caged they must have caged
V-ing perfect
I must have been caging you must have been caging he must have been caging we must have been caging you must have been caging they must have been caging
Negation
Simple form
I must not cage you must not cage he must not cage we must not cage you must not cage they must not cage
V-ing form
I must not be caging you must not be caging he must not be caging we must not be caging you must not be caging they must not be caging
Perfect
I must not have caged you must not have caged he must not have caged we must not have caged you must not have caged they must not have caged
V-ing perfect
I must not have been caging you must not have been caging he must not have been caging we must not have been caging you must not have been caging they must not have been caging
Interrogative form
Simple form
must I cage? must you cage? must he cage? must we cage? must you cage? must they cage?
V-ing form
must I be caging? must you be caging? must he be caging? must we be caging? must you be caging? must they be caging?
Perfect
must I have caged? must you have caged? must he have caged? must we have caged? must you have caged? must they have caged?
V-ing perfect
must I have been caging? must you have been caging? must he have been caging? must we have been caging? must you have been caging? must they have been caging?
Interro-negative form
Simple form
must I not cage? must you not cage? must he not cage? must we not cage? must you not cage? must they not cage?
V-ing form
must I not be caging? must you not be caging? must he not be caging? must we not be caging? must you not be caging? must they not be caging?
Perfect
must I not have caged? must you not have caged? must he not have caged? must we not have caged? must you not have caged? must they not have caged?
V-ing perfect
must I not have been caging? must you not have been caging? must he not have been caging? must we not have been caging? must you not have been caging? must they not have been caging?