I must pancake you must pancake he must pancake we must pancake you must pancake they must pancake
V-ing form
I must be pancaking you must be pancaking he must be pancaking we must be pancaking you must be pancaking they must be pancaking
Perfect
I must have pancaked you must have pancaked he must have pancaked we must have pancaked you must have pancaked they must have pancaked
V-ing perfect
I must have been pancaking you must have been pancaking he must have been pancaking we must have been pancaking you must have been pancaking they must have been pancaking
Negation
Simple form
I must not pancake you must not pancake he must not pancake we must not pancake you must not pancake they must not pancake
V-ing form
I must not be pancaking you must not be pancaking he must not be pancaking we must not be pancaking you must not be pancaking they must not be pancaking
Perfect
I must not have pancaked you must not have pancaked he must not have pancaked we must not have pancaked you must not have pancaked they must not have pancaked
V-ing perfect
I must not have been pancaking you must not have been pancaking he must not have been pancaking we must not have been pancaking you must not have been pancaking they must not have been pancaking
Interrogative form
Simple form
must I pancake? must you pancake? must he pancake? must we pancake? must you pancake? must they pancake?
V-ing form
must I be pancaking? must you be pancaking? must he be pancaking? must we be pancaking? must you be pancaking? must they be pancaking?
Perfect
must I have pancaked? must you have pancaked? must he have pancaked? must we have pancaked? must you have pancaked? must they have pancaked?
V-ing perfect
must I have been pancaking? must you have been pancaking? must he have been pancaking? must we have been pancaking? must you have been pancaking? must they have been pancaking?
Interro-negative form
Simple form
must I not pancake? must you not pancake? must he not pancake? must we not pancake? must you not pancake? must they not pancake?
V-ing form
must I not be pancaking? must you not be pancaking? must he not be pancaking? must we not be pancaking? must you not be pancaking? must they not be pancaking?
Perfect
must I not have pancaked? must you not have pancaked? must he not have pancaked? must we not have pancaked? must you not have pancaked? must they not have pancaked?
V-ing perfect
must I not have been pancaking? must you not have been pancaking? must he not have been pancaking? must we not have been pancaking? must you not have been pancaking? must they not have been pancaking?