I must gee you must gee she must gee we must gee you must gee they must gee
V-ing form
I must be geeing you must be geeing she must be geeing we must be geeing you must be geeing they must be geeing
Perfect
I must have geed you must have geed she must have geed we must have geed you must have geed they must have geed
V-ing perfect
I must have been geeing you must have been geeing she must have been geeing we must have been geeing you must have been geeing they must have been geeing
Negation
Simple form
I must not gee you must not gee she must not gee we must not gee you must not gee they must not gee
V-ing form
I must not be geeing you must not be geeing she must not be geeing we must not be geeing you must not be geeing they must not be geeing
Perfect
I must not have geed you must not have geed she must not have geed we must not have geed you must not have geed they must not have geed
V-ing perfect
I must not have been geeing you must not have been geeing she must not have been geeing we must not have been geeing you must not have been geeing they must not have been geeing
Interrogative form
Simple form
must I gee? must you gee? must she gee? must we gee? must you gee? must they gee?
V-ing form
must I be geeing? must you be geeing? must she be geeing? must we be geeing? must you be geeing? must they be geeing?
Perfect
must I have geed? must you have geed? must she have geed? must we have geed? must you have geed? must they have geed?
V-ing perfect
must I have been geeing? must you have been geeing? must she have been geeing? must we have been geeing? must you have been geeing? must they have been geeing?
Interro-negative form
Simple form
must I not gee? must you not gee? must she not gee? must we not gee? must you not gee? must they not gee?
V-ing form
must I not be geeing? must you not be geeing? must she not be geeing? must we not be geeing? must you not be geeing? must they not be geeing?
Perfect
must I not have geed? must you not have geed? must she not have geed? must we not have geed? must you not have geed? must they not have geed?
V-ing perfect
must I not have been geeing? must you not have been geeing? must she not have been geeing? must we not have been geeing? must you not have been geeing? must they not have been geeing?