I must carouse you must carouse he must carouse we must carouse you must carouse they must carouse
V-ing form
I must be carousing you must be carousing he must be carousing we must be carousing you must be carousing they must be carousing
Perfect
I must have caroused you must have caroused he must have caroused we must have caroused you must have caroused they must have caroused
V-ing perfect
I must have been carousing you must have been carousing he must have been carousing we must have been carousing you must have been carousing they must have been carousing
Negation
Simple form
I must not carouse you must not carouse he must not carouse we must not carouse you must not carouse they must not carouse
V-ing form
I must not be carousing you must not be carousing he must not be carousing we must not be carousing you must not be carousing they must not be carousing
Perfect
I must not have caroused you must not have caroused he must not have caroused we must not have caroused you must not have caroused they must not have caroused
V-ing perfect
I must not have been carousing you must not have been carousing he must not have been carousing we must not have been carousing you must not have been carousing they must not have been carousing
Interrogative form
Simple form
must I carouse? must you carouse? must he carouse? must we carouse? must you carouse? must they carouse?
V-ing form
must I be carousing? must you be carousing? must he be carousing? must we be carousing? must you be carousing? must they be carousing?
Perfect
must I have caroused? must you have caroused? must he have caroused? must we have caroused? must you have caroused? must they have caroused?
V-ing perfect
must I have been carousing? must you have been carousing? must he have been carousing? must we have been carousing? must you have been carousing? must they have been carousing?
Interro-negative form
Simple form
must I not carouse? must you not carouse? must he not carouse? must we not carouse? must you not carouse? must they not carouse?
V-ing form
must I not be carousing? must you not be carousing? must he not be carousing? must we not be carousing? must you not be carousing? must they not be carousing?
Perfect
must I not have caroused? must you not have caroused? must he not have caroused? must we not have caroused? must you not have caroused? must they not have caroused?
V-ing perfect
must I not have been carousing? must you not have been carousing? must he not have been carousing? must we not have been carousing? must you not have been carousing? must they not have been carousing?