I must bungle you must bungle she must bungle we must bungle you must bungle they must bungle
V-ing form
I must be bungling you must be bungling she must be bungling we must be bungling you must be bungling they must be bungling
Perfect
I must have bungled you must have bungled she must have bungled we must have bungled you must have bungled they must have bungled
V-ing perfect
I must have been bungling you must have been bungling she must have been bungling we must have been bungling you must have been bungling they must have been bungling
Negation
Simple form
I must not bungle you must not bungle she must not bungle we must not bungle you must not bungle they must not bungle
V-ing form
I must not be bungling you must not be bungling she must not be bungling we must not be bungling you must not be bungling they must not be bungling
Perfect
I must not have bungled you must not have bungled she must not have bungled we must not have bungled you must not have bungled they must not have bungled
V-ing perfect
I must not have been bungling you must not have been bungling she must not have been bungling we must not have been bungling you must not have been bungling they must not have been bungling
Interrogative form
Simple form
must I bungle? must you bungle? must she bungle? must we bungle? must you bungle? must they bungle?
V-ing form
must I be bungling? must you be bungling? must she be bungling? must we be bungling? must you be bungling? must they be bungling?
Perfect
must I have bungled? must you have bungled? must she have bungled? must we have bungled? must you have bungled? must they have bungled?
V-ing perfect
must I have been bungling? must you have been bungling? must she have been bungling? must we have been bungling? must you have been bungling? must they have been bungling?
Interro-negative form
Simple form
must I not bungle? must you not bungle? must she not bungle? must we not bungle? must you not bungle? must they not bungle?
V-ing form
must I not be bungling? must you not be bungling? must she not be bungling? must we not be bungling? must you not be bungling? must they not be bungling?
Perfect
must I not have bungled? must you not have bungled? must she not have bungled? must we not have bungled? must you not have bungled? must they not have bungled?
V-ing perfect
must I not have been bungling? must you not have been bungling? must she not have been bungling? must we not have been bungling? must you not have been bungling? must they not have been bungling?