I must presume you must presume he must presume we must presume you must presume they must presume
V-ing form
I must be presuming you must be presuming he must be presuming we must be presuming you must be presuming they must be presuming
Perfect
I must have presumed you must have presumed he must have presumed we must have presumed you must have presumed they must have presumed
V-ing perfect
I must have been presuming you must have been presuming he must have been presuming we must have been presuming you must have been presuming they must have been presuming
Negation
Simple form
I must not presume you must not presume he must not presume we must not presume you must not presume they must not presume
V-ing form
I must not be presuming you must not be presuming he must not be presuming we must not be presuming you must not be presuming they must not be presuming
Perfect
I must not have presumed you must not have presumed he must not have presumed we must not have presumed you must not have presumed they must not have presumed
V-ing perfect
I must not have been presuming you must not have been presuming he must not have been presuming we must not have been presuming you must not have been presuming they must not have been presuming
Interrogative form
Simple form
must I presume? must you presume? must he presume? must we presume? must you presume? must they presume?
V-ing form
must I be presuming? must you be presuming? must he be presuming? must we be presuming? must you be presuming? must they be presuming?
Perfect
must I have presumed? must you have presumed? must he have presumed? must we have presumed? must you have presumed? must they have presumed?
V-ing perfect
must I have been presuming? must you have been presuming? must he have been presuming? must we have been presuming? must you have been presuming? must they have been presuming?
Interro-negative form
Simple form
must I not presume? must you not presume? must he not presume? must we not presume? must you not presume? must they not presume?
V-ing form
must I not be presuming? must you not be presuming? must he not be presuming? must we not be presuming? must you not be presuming? must they not be presuming?
Perfect
must I not have presumed? must you not have presumed? must he not have presumed? must we not have presumed? must you not have presumed? must they not have presumed?
V-ing perfect
must I not have been presuming? must you not have been presuming? must he not have been presuming? must we not have been presuming? must you not have been presuming? must they not have been presuming?