I must reduce you must reduce she must reduce we must reduce you must reduce they must reduce
V-ing form
I must be reducing you must be reducing she must be reducing we must be reducing you must be reducing they must be reducing
Perfect
I must have reduced you must have reduced she must have reduced we must have reduced you must have reduced they must have reduced
V-ing perfect
I must have been reducing you must have been reducing she must have been reducing we must have been reducing you must have been reducing they must have been reducing
Negation
Simple form
I must not reduce you must not reduce she must not reduce we must not reduce you must not reduce they must not reduce
V-ing form
I must not be reducing you must not be reducing she must not be reducing we must not be reducing you must not be reducing they must not be reducing
Perfect
I must not have reduced you must not have reduced she must not have reduced we must not have reduced you must not have reduced they must not have reduced
V-ing perfect
I must not have been reducing you must not have been reducing she must not have been reducing we must not have been reducing you must not have been reducing they must not have been reducing
Interrogative form
Simple form
must I reduce? must you reduce? must she reduce? must we reduce? must you reduce? must they reduce?
V-ing form
must I be reducing? must you be reducing? must she be reducing? must we be reducing? must you be reducing? must they be reducing?
Perfect
must I have reduced? must you have reduced? must she have reduced? must we have reduced? must you have reduced? must they have reduced?
V-ing perfect
must I have been reducing? must you have been reducing? must she have been reducing? must we have been reducing? must you have been reducing? must they have been reducing?
Interro-negative form
Simple form
must I not reduce? must you not reduce? must she not reduce? must we not reduce? must you not reduce? must they not reduce?
V-ing form
must I not be reducing? must you not be reducing? must she not be reducing? must we not be reducing? must you not be reducing? must they not be reducing?
Perfect
must I not have reduced? must you not have reduced? must she not have reduced? must we not have reduced? must you not have reduced? must they not have reduced?
V-ing perfect
must I not have been reducing? must you not have been reducing? must she not have been reducing? must we not have been reducing? must you not have been reducing? must they not have been reducing?