I must ape you must ape he must ape we must ape you must ape they must ape
V-ing form
I must be aping you must be aping he must be aping we must be aping you must be aping they must be aping
Perfect
I must have aped you must have aped he must have aped we must have aped you must have aped they must have aped
V-ing perfect
I must have been aping you must have been aping he must have been aping we must have been aping you must have been aping they must have been aping
Negation
Simple form
I must not ape you must not ape he must not ape we must not ape you must not ape they must not ape
V-ing form
I must not be aping you must not be aping he must not be aping we must not be aping you must not be aping they must not be aping
Perfect
I must not have aped you must not have aped he must not have aped we must not have aped you must not have aped they must not have aped
V-ing perfect
I must not have been aping you must not have been aping he must not have been aping we must not have been aping you must not have been aping they must not have been aping
Interrogative form
Simple form
must I ape? must you ape? must he ape? must we ape? must you ape? must they ape?
V-ing form
must I be aping? must you be aping? must he be aping? must we be aping? must you be aping? must they be aping?
Perfect
must I have aped? must you have aped? must he have aped? must we have aped? must you have aped? must they have aped?
V-ing perfect
must I have been aping? must you have been aping? must he have been aping? must we have been aping? must you have been aping? must they have been aping?
Interro-negative form
Simple form
must I not ape? must you not ape? must he not ape? must we not ape? must you not ape? must they not ape?
V-ing form
must I not be aping? must you not be aping? must he not be aping? must we not be aping? must you not be aping? must they not be aping?
Perfect
must I not have aped? must you not have aped? must he not have aped? must we not have aped? must you not have aped? must they not have aped?
V-ing perfect
must I not have been aping? must you not have been aping? must he not have been aping? must we not have been aping? must you not have been aping? must they not have been aping?