I must bollix you must bollix she must bollix we must bollix you must bollix they must bollix
V-ing form
I must be bollixing you must be bollixing she must be bollixing we must be bollixing you must be bollixing they must be bollixing
Perfect
I must have bollixed you must have bollixed she must have bollixed we must have bollixed you must have bollixed they must have bollixed
V-ing perfect
I must have been bollixing you must have been bollixing she must have been bollixing we must have been bollixing you must have been bollixing they must have been bollixing
Negation
Simple form
I must not bollix you must not bollix she must not bollix we must not bollix you must not bollix they must not bollix
V-ing form
I must not be bollixing you must not be bollixing she must not be bollixing we must not be bollixing you must not be bollixing they must not be bollixing
Perfect
I must not have bollixed you must not have bollixed she must not have bollixed we must not have bollixed you must not have bollixed they must not have bollixed
V-ing perfect
I must not have been bollixing you must not have been bollixing she must not have been bollixing we must not have been bollixing you must not have been bollixing they must not have been bollixing
Interrogative form
Simple form
must I bollix? must you bollix? must she bollix? must we bollix? must you bollix? must they bollix?
V-ing form
must I be bollixing? must you be bollixing? must she be bollixing? must we be bollixing? must you be bollixing? must they be bollixing?
Perfect
must I have bollixed? must you have bollixed? must she have bollixed? must we have bollixed? must you have bollixed? must they have bollixed?
V-ing perfect
must I have been bollixing? must you have been bollixing? must she have been bollixing? must we have been bollixing? must you have been bollixing? must they have been bollixing?
Interro-negative form
Simple form
must I not bollix? must you not bollix? must she not bollix? must we not bollix? must you not bollix? must they not bollix?
V-ing form
must I not be bollixing? must you not be bollixing? must she not be bollixing? must we not be bollixing? must you not be bollixing? must they not be bollixing?
Perfect
must I not have bollixed? must you not have bollixed? must she not have bollixed? must we not have bollixed? must you not have bollixed? must they not have bollixed?
V-ing perfect
must I not have been bollixing? must you not have been bollixing? must she not have been bollixing? must we not have been bollixing? must you not have been bollixing? must they not have been bollixing?