I must shrink you must shrink she must shrink we must shrink you must shrink they must shrink
V-ing form
I must be shrinking you must be shrinking she must be shrinking we must be shrinking you must be shrinking they must be shrinking
Perfect
I must have shrunk you must have shrunk she must have shrunk we must have shrunk you must have shrunk they must have shrunk
V-ing perfect
I must have been shrinking you must have been shrinking she must have been shrinking we must have been shrinking you must have been shrinking they must have been shrinking
Negation
Simple form
I must not shrink you must not shrink she must not shrink we must not shrink you must not shrink they must not shrink
V-ing form
I must not be shrinking you must not be shrinking she must not be shrinking we must not be shrinking you must not be shrinking they must not be shrinking
Perfect
I must not have shrunk you must not have shrunk she must not have shrunk we must not have shrunk you must not have shrunk they must not have shrunk
V-ing perfect
I must not have been shrinking you must not have been shrinking she must not have been shrinking we must not have been shrinking you must not have been shrinking they must not have been shrinking
Interrogative form
Simple form
must I shrink? must you shrink? must she shrink? must we shrink? must you shrink? must they shrink?
V-ing form
must I be shrinking? must you be shrinking? must she be shrinking? must we be shrinking? must you be shrinking? must they be shrinking?
Perfect
must I have shrunk? must you have shrunk? must she have shrunk? must we have shrunk? must you have shrunk? must they have shrunk?
V-ing perfect
must I have been shrinking? must you have been shrinking? must she have been shrinking? must we have been shrinking? must you have been shrinking? must they have been shrinking?
Interro-negative form
Simple form
must I not shrink? must you not shrink? must she not shrink? must we not shrink? must you not shrink? must they not shrink?
V-ing form
must I not be shrinking? must you not be shrinking? must she not be shrinking? must we not be shrinking? must you not be shrinking? must they not be shrinking?
Perfect
must I not have shrunk? must you not have shrunk? must she not have shrunk? must we not have shrunk? must you not have shrunk? must they not have shrunk?
V-ing perfect
must I not have been shrinking? must you not have been shrinking? must she not have been shrinking? must we not have been shrinking? must you not have been shrinking? must they not have been shrinking?