must twill
Regular verb: twill - twilled- twilled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must twill
you must twill
she must twill
we must twill
you must twill
they must twill 	I must be twilling
you must be twilling
she must be twilling
we must be twilling
you must be twilling
they must be twilling	I must have twilled
you must have twilled
she must have twilled
we must have twilled
you must have twilled
they must have twilled	I must have been twilling
you must have been twilling
she must have been twilling
we must have been twilling
you must have been twilling
they must have been twilling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't twill
you mustn't twill
she mustn't twill
we mustn't twill
you mustn't twill
they mustn't twill 	I mustn't be twilling
you mustn't be twilling
she mustn't be twilling
we mustn't be twilling
you mustn't be twilling
they mustn't be twilling	I mustn't have twilled
you mustn't have twilled
she mustn't have twilled
we mustn't have twilled
you mustn't have twilled
they mustn't have twilled	I mustn't have been twilling
you mustn't have been twilling
she mustn't have been twilling
we mustn't have been twilling
you mustn't have been twilling
they mustn't have been twilling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I twill?
must you twill?
must she twill?
must we twill?
must you twill?
must they twill? 	must I be twilling?
must you be twilling?
must she be twilling?
must we be twilling?
must you be twilling?
must they be twilling? 	must I have twilled?
must you have twilled?
must she have twilled?
must we have twilled?
must you have twilled?
must they have twilled? 	must I have been twilling?
must you have been twilling?
must she have been twilling?
must we have been twilling?
must you have been twilling?
must they have been twilling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I twill?
mustn't you twill?
mustn't she twill?
mustn't we twill?
mustn't you twill?
mustn't they twill? 	mustn't I be twilling?
mustn't you be twilling?
mustn't she be twilling?
mustn't we be twilling?
mustn't you be twilling?
mustn't they be twilling? 	mustn't I have twilled?
mustn't you have twilled?
mustn't she have twilled?
mustn't we have twilled?
mustn't you have twilled?
mustn't they have twilled? 	mustn't I have been twilling?
mustn't you have been twilling?
mustn't she have been twilling?
mustn't we have been twilling?
mustn't you have been twilling?
mustn't they have been twilling?