I must bollix you must bollix he must bollix we must bollix you must bollix they must bollix
V-ing form
I must be bollixing you must be bollixing he must be bollixing we must be bollixing you must be bollixing they must be bollixing
Perfect
I must have bollixed you must have bollixed he 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 he 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 he 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 he 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 he 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 he 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 he bollix? must we bollix? must you bollix? must they bollix?
V-ing form
must I be bollixing? must you be bollixing? must he be bollixing? must we be bollixing? must you be bollixing? must they be bollixing?
Perfect
must I have bollixed? must you have bollixed? must he 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 he 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 he 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 he 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 he 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 he not have been bollixing? must we not have been bollixing? must you not have been bollixing? must they not have been bollixing?