must twist
Regular verb: twist - twisted- twisted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must twist
you must twist
she must twist
we must twist
you must twist
they must twist 	I must be twisting
you must be twisting
she must be twisting
we must be twisting
you must be twisting
they must be twisting	I must have twisted
you must have twisted
she must have twisted
we must have twisted
you must have twisted
they must have twisted	I must have been twisting
you must have been twisting
she must have been twisting
we must have been twisting
you must have been twisting
they must have been twisting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't twist
you mustn't twist
she mustn't twist
we mustn't twist
you mustn't twist
they mustn't twist 	I mustn't be twisting
you mustn't be twisting
she mustn't be twisting
we mustn't be twisting
you mustn't be twisting
they mustn't be twisting	I mustn't have twisted
you mustn't have twisted
she mustn't have twisted
we mustn't have twisted
you mustn't have twisted
they mustn't have twisted	I mustn't have been twisting
you mustn't have been twisting
she mustn't have been twisting
we mustn't have been twisting
you mustn't have been twisting
they mustn't have been twisting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I twist?
must you twist?
must she twist?
must we twist?
must you twist?
must they twist? 	must I be twisting?
must you be twisting?
must she be twisting?
must we be twisting?
must you be twisting?
must they be twisting? 	must I have twisted?
must you have twisted?
must she have twisted?
must we have twisted?
must you have twisted?
must they have twisted? 	must I have been twisting?
must you have been twisting?
must she have been twisting?
must we have been twisting?
must you have been twisting?
must they have been twisting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I twist?
mustn't you twist?
mustn't she twist?
mustn't we twist?
mustn't you twist?
mustn't they twist? 	mustn't I be twisting?
mustn't you be twisting?
mustn't she be twisting?
mustn't we be twisting?
mustn't you be twisting?
mustn't they be twisting? 	mustn't I have twisted?
mustn't you have twisted?
mustn't she have twisted?
mustn't we have twisted?
mustn't you have twisted?
mustn't they have twisted? 	mustn't I have been twisting?
mustn't you have been twisting?
mustn't she have been twisting?
mustn't we have been twisting?
mustn't you have been twisting?
mustn't they have been twisting?