must double-knit
Regular verb: double-knit - double-knited- double-knited

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must double-knit
you must double-knit
she must double-knit
we must double-knit
you must double-knit
they must double-knit 	I must be double-kniting
you must be double-kniting
she must be double-kniting
we must be double-kniting
you must be double-kniting
they must be double-kniting	I must have double-knited
you must have double-knited
she must have double-knited
we must have double-knited
you must have double-knited
they must have double-knited	I must have been double-kniting
you must have been double-kniting
she must have been double-kniting
we must have been double-kniting
you must have been double-kniting
they must have been double-kniting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't double-knit
you mustn't double-knit
she mustn't double-knit
we mustn't double-knit
you mustn't double-knit
they mustn't double-knit 	I mustn't be double-kniting
you mustn't be double-kniting
she mustn't be double-kniting
we mustn't be double-kniting
you mustn't be double-kniting
they mustn't be double-kniting	I mustn't have double-knited
you mustn't have double-knited
she mustn't have double-knited
we mustn't have double-knited
you mustn't have double-knited
they mustn't have double-knited	I mustn't have been double-kniting
you mustn't have been double-kniting
she mustn't have been double-kniting
we mustn't have been double-kniting
you mustn't have been double-kniting
they mustn't have been double-kniting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I double-knit?
must you double-knit?
must she double-knit?
must we double-knit?
must you double-knit?
must they double-knit? 	must I be double-kniting?
must you be double-kniting?
must she be double-kniting?
must we be double-kniting?
must you be double-kniting?
must they be double-kniting? 	must I have double-knited?
must you have double-knited?
must she have double-knited?
must we have double-knited?
must you have double-knited?
must they have double-knited? 	must I have been double-kniting?
must you have been double-kniting?
must she have been double-kniting?
must we have been double-kniting?
must you have been double-kniting?
must they have been double-kniting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I double-knit?
mustn't you double-knit?
mustn't she double-knit?
mustn't we double-knit?
mustn't you double-knit?
mustn't they double-knit? 	mustn't I be double-kniting?
mustn't you be double-kniting?
mustn't she be double-kniting?
mustn't we be double-kniting?
mustn't you be double-kniting?
mustn't they be double-kniting? 	mustn't I have double-knited?
mustn't you have double-knited?
mustn't she have double-knited?
mustn't we have double-knited?
mustn't you have double-knited?
mustn't they have double-knited? 	mustn't I have been double-kniting?
mustn't you have been double-kniting?
mustn't she have been double-kniting?
mustn't we have been double-kniting?
mustn't you have been double-kniting?
mustn't they have been double-kniting?