I must slice you must slice she must slice we must slice you must slice they must slice
V-ing form
I must be slicing you must be slicing she must be slicing we must be slicing you must be slicing they must be slicing
Perfect
I must have sliced you must have sliced she must have sliced we must have sliced you must have sliced they must have sliced
V-ing perfect
I must have been slicing you must have been slicing she must have been slicing we must have been slicing you must have been slicing they must have been slicing
Negation
Simple form
I must not slice you must not slice she must not slice we must not slice you must not slice they must not slice
V-ing form
I must not be slicing you must not be slicing she must not be slicing we must not be slicing you must not be slicing they must not be slicing
Perfect
I must not have sliced you must not have sliced she must not have sliced we must not have sliced you must not have sliced they must not have sliced
V-ing perfect
I must not have been slicing you must not have been slicing she must not have been slicing we must not have been slicing you must not have been slicing they must not have been slicing
Interrogative form
Simple form
must I slice? must you slice? must she slice? must we slice? must you slice? must they slice?
V-ing form
must I be slicing? must you be slicing? must she be slicing? must we be slicing? must you be slicing? must they be slicing?
Perfect
must I have sliced? must you have sliced? must she have sliced? must we have sliced? must you have sliced? must they have sliced?
V-ing perfect
must I have been slicing? must you have been slicing? must she have been slicing? must we have been slicing? must you have been slicing? must they have been slicing?
Interro-negative form
Simple form
must I not slice? must you not slice? must she not slice? must we not slice? must you not slice? must they not slice?
V-ing form
must I not be slicing? must you not be slicing? must she not be slicing? must we not be slicing? must you not be slicing? must they not be slicing?
Perfect
must I not have sliced? must you not have sliced? must she not have sliced? must we not have sliced? must you not have sliced? must they not have sliced?
V-ing perfect
must I not have been slicing? must you not have been slicing? must she not have been slicing? must we not have been slicing? must you not have been slicing? must they not have been slicing?