I must prelude you must prelude he must prelude we must prelude you must prelude they must prelude
V-ing form
I must be preluding you must be preluding he must be preluding we must be preluding you must be preluding they must be preluding
Perfect
I must have preluded you must have preluded he must have preluded we must have preluded you must have preluded they must have preluded
V-ing perfect
I must have been preluding you must have been preluding he must have been preluding we must have been preluding you must have been preluding they must have been preluding
Negation
Simple form
I must not prelude you must not prelude he must not prelude we must not prelude you must not prelude they must not prelude
V-ing form
I must not be preluding you must not be preluding he must not be preluding we must not be preluding you must not be preluding they must not be preluding
Perfect
I must not have preluded you must not have preluded he must not have preluded we must not have preluded you must not have preluded they must not have preluded
V-ing perfect
I must not have been preluding you must not have been preluding he must not have been preluding we must not have been preluding you must not have been preluding they must not have been preluding
Interrogative form
Simple form
must I prelude? must you prelude? must he prelude? must we prelude? must you prelude? must they prelude?
V-ing form
must I be preluding? must you be preluding? must he be preluding? must we be preluding? must you be preluding? must they be preluding?
Perfect
must I have preluded? must you have preluded? must he have preluded? must we have preluded? must you have preluded? must they have preluded?
V-ing perfect
must I have been preluding? must you have been preluding? must he have been preluding? must we have been preluding? must you have been preluding? must they have been preluding?
Interro-negative form
Simple form
must I not prelude? must you not prelude? must he not prelude? must we not prelude? must you not prelude? must they not prelude?
V-ing form
must I not be preluding? must you not be preluding? must he not be preluding? must we not be preluding? must you not be preluding? must they not be preluding?
Perfect
must I not have preluded? must you not have preluded? must he not have preluded? must we not have preluded? must you not have preluded? must they not have preluded?
V-ing perfect
must I not have been preluding? must you not have been preluding? must he not have been preluding? must we not have been preluding? must you not have been preluding? must they not have been preluding?