I must suppose you must suppose he must suppose we must suppose you must suppose they must suppose
V-ing form
I must be supposing you must be supposing he must be supposing we must be supposing you must be supposing they must be supposing
Perfect
I must have supposed you must have supposed he must have supposed we must have supposed you must have supposed they must have supposed
V-ing perfect
I must have been supposing you must have been supposing he must have been supposing we must have been supposing you must have been supposing they must have been supposing
Negation
Simple form
I must not suppose you must not suppose he must not suppose we must not suppose you must not suppose they must not suppose
V-ing form
I must not be supposing you must not be supposing he must not be supposing we must not be supposing you must not be supposing they must not be supposing
Perfect
I must not have supposed you must not have supposed he must not have supposed we must not have supposed you must not have supposed they must not have supposed
V-ing perfect
I must not have been supposing you must not have been supposing he must not have been supposing we must not have been supposing you must not have been supposing they must not have been supposing
Interrogative form
Simple form
must I suppose? must you suppose? must he suppose? must we suppose? must you suppose? must they suppose?
V-ing form
must I be supposing? must you be supposing? must he be supposing? must we be supposing? must you be supposing? must they be supposing?
Perfect
must I have supposed? must you have supposed? must he have supposed? must we have supposed? must you have supposed? must they have supposed?
V-ing perfect
must I have been supposing? must you have been supposing? must he have been supposing? must we have been supposing? must you have been supposing? must they have been supposing?
Interro-negative form
Simple form
must I not suppose? must you not suppose? must he not suppose? must we not suppose? must you not suppose? must they not suppose?
V-ing form
must I not be supposing? must you not be supposing? must he not be supposing? must we not be supposing? must you not be supposing? must they not be supposing?
Perfect
must I not have supposed? must you not have supposed? must he not have supposed? must we not have supposed? must you not have supposed? must they not have supposed?
V-ing perfect
must I not have been supposing? must you not have been supposing? must he not have been supposing? must we not have been supposing? must you not have been supposing? must they not have been supposing?