must bask
Regular verb: bask - basked- basked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must bask
you must bask
she must bask
we must bask
you must bask
they must bask 	I must be basking
you must be basking
she must be basking
we must be basking
you must be basking
they must be basking	I must have basked
you must have basked
she must have basked
we must have basked
you must have basked
they must have basked	I must have been basking
you must have been basking
she must have been basking
we must have been basking
you must have been basking
they must have been basking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't bask
you mustn't bask
she mustn't bask
we mustn't bask
you mustn't bask
they mustn't bask 	I mustn't be basking
you mustn't be basking
she mustn't be basking
we mustn't be basking
you mustn't be basking
they mustn't be basking	I mustn't have basked
you mustn't have basked
she mustn't have basked
we mustn't have basked
you mustn't have basked
they mustn't have basked	I mustn't have been basking
you mustn't have been basking
she mustn't have been basking
we mustn't have been basking
you mustn't have been basking
they mustn't have been basking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I bask?
must you bask?
must she bask?
must we bask?
must you bask?
must they bask? 	must I be basking?
must you be basking?
must she be basking?
must we be basking?
must you be basking?
must they be basking? 	must I have basked?
must you have basked?
must she have basked?
must we have basked?
must you have basked?
must they have basked? 	must I have been basking?
must you have been basking?
must she have been basking?
must we have been basking?
must you have been basking?
must they have been basking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I bask?
mustn't you bask?
mustn't she bask?
mustn't we bask?
mustn't you bask?
mustn't they bask? 	mustn't I be basking?
mustn't you be basking?
mustn't she be basking?
mustn't we be basking?
mustn't you be basking?
mustn't they be basking? 	mustn't I have basked?
mustn't you have basked?
mustn't she have basked?
mustn't we have basked?
mustn't you have basked?
mustn't they have basked? 	mustn't I have been basking?
mustn't you have been basking?
mustn't she have been basking?
mustn't we have been basking?
mustn't you have been basking?
mustn't they have been basking?