I must clam you must clam he must clam we must clam you must clam they must clam
V-ing form
I must be claming you must be claming he must be claming we must be claming you must be claming they must be claming
Perfect
I must have clamed you must have clamed he must have clamed we must have clamed you must have clamed they must have clamed
V-ing perfect
I must have been claming you must have been claming he must have been claming we must have been claming you must have been claming they must have been claming
Negation
Simple form
I must not clam you must not clam he must not clam we must not clam you must not clam they must not clam
V-ing form
I must not be claming you must not be claming he must not be claming we must not be claming you must not be claming they must not be claming
Perfect
I must not have clamed you must not have clamed he must not have clamed we must not have clamed you must not have clamed they must not have clamed
V-ing perfect
I must not have been claming you must not have been claming he must not have been claming we must not have been claming you must not have been claming they must not have been claming
Interrogative form
Simple form
must I clam? must you clam? must he clam? must we clam? must you clam? must they clam?
V-ing form
must I be claming? must you be claming? must he be claming? must we be claming? must you be claming? must they be claming?
Perfect
must I have clamed? must you have clamed? must he have clamed? must we have clamed? must you have clamed? must they have clamed?
V-ing perfect
must I have been claming? must you have been claming? must he have been claming? must we have been claming? must you have been claming? must they have been claming?
Interro-negative form
Simple form
must I not clam? must you not clam? must he not clam? must we not clam? must you not clam? must they not clam?
V-ing form
must I not be claming? must you not be claming? must he not be claming? must we not be claming? must you not be claming? must they not be claming?
Perfect
must I not have clamed? must you not have clamed? must he not have clamed? must we not have clamed? must you not have clamed? must they not have clamed?
V-ing perfect
must I not have been claming? must you not have been claming? must he not have been claming? must we not have been claming? must you not have been claming? must they not have been claming?