must bollix
Regular verb: bollix - bollixed- bollixed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must bollix
you must bollix
she must bollix
we must bollix
you must bollix
they must bollix 	I must be bollixing
you must be bollixing
she must be bollixing
we must be bollixing
you must be bollixing
they must be bollixing	I must have bollixed
you must have bollixed
she must have bollixed
we must have bollixed
you must have bollixed
they must have bollixed	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 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't bollix
you mustn't bollix
she mustn't bollix
we mustn't bollix
you mustn't bollix
they mustn't bollix 	I mustn't be bollixing
you mustn't be bollixing
she mustn't be bollixing
we mustn't be bollixing
you mustn't be bollixing
they mustn't be bollixing	I mustn't have bollixed
you mustn't have bollixed
she mustn't have bollixed
we mustn't have bollixed
you mustn't have bollixed
they mustn't have bollixed	I mustn't have been bollixing
you mustn't have been bollixing
she mustn't have been bollixing
we mustn't have been bollixing
you mustn't have been bollixing
they mustn't have been bollixing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I bollix?
must you bollix?
must she bollix?
must we bollix?
must you bollix?
must they bollix? 	must I be bollixing?
must you be bollixing?
must she be bollixing?
must we be bollixing?
must you be bollixing?
must they be bollixing? 	must I have bollixed?
must you have bollixed?
must she have bollixed?
must we have bollixed?
must you have bollixed?
must they have bollixed? 	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 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I bollix?
mustn't you bollix?
mustn't she bollix?
mustn't we bollix?
mustn't you bollix?
mustn't they bollix? 	mustn't I be bollixing?
mustn't you be bollixing?
mustn't she be bollixing?
mustn't we be bollixing?
mustn't you be bollixing?
mustn't they be bollixing? 	mustn't I have bollixed?
mustn't you have bollixed?
mustn't she have bollixed?
mustn't we have bollixed?
mustn't you have bollixed?
mustn't they have bollixed? 	mustn't I have been bollixing?
mustn't you have been bollixing?
mustn't she have been bollixing?
mustn't we have been bollixing?
mustn't you have been bollixing?
mustn't they have been bollixing?