English verb conjugation
MUST WINDMILL

Regular verb: windmill - windmilled - windmilled

Affirmation

Simple form	V-ing form
I must windmill you must windmill she must windmill we must windmill you must windmill they must windmill	I must be windmilling you must be windmilling she must be windmilling we must be windmilling you must be windmilling they must be windmilling
Perfect	V-ing perfect
I must have windmilled you must have windmilled she must have windmilled we must have windmilled you must have windmilled they must have windmilled	I must have been windmilling you must have been windmilling she must have been windmilling we must have been windmilling you must have been windmilling they must have been windmilling

Negation

Simple form	V-ing form
I mustn't windmill you mustn't windmill she mustn't windmill we mustn't windmill you mustn't windmill they mustn't windmill	I mustn't be windmilling you mustn't be windmilling she mustn't be windmilling we mustn't be windmilling you mustn't be windmilling they mustn't be windmilling
Perfect	V-ing perfect
I mustn't have windmilled you mustn't have windmilled she mustn't have windmilled we mustn't have windmilled you mustn't have windmilled they mustn't have windmilled	I mustn't have been windmilling you mustn't have been windmilling she mustn't have been windmilling we mustn't have been windmilling you mustn't have been windmilling they mustn't have been windmilling

Interrogative form

Simple form	V-ing form
must I windmill? must you windmill? must she windmill? must we windmill? must you windmill? must they windmill?	must I be windmilling? must you be windmilling? must she be windmilling? must we be windmilling? must you be windmilling? must they be windmilling?
Perfect	V-ing perfect
must I have windmilled? must you have windmilled? must she have windmilled? must we have windmilled? must you have windmilled? must they have windmilled?	must I have been windmilling? must you have been windmilling? must she have been windmilling? must we have been windmilling? must you have been windmilling? must they have been windmilling?

Interro-negative form

Simple form	V-ing form
mustn't I windmill? mustn't you windmill? mustn't she windmill? mustn't we windmill? mustn't you windmill? mustn't they windmill?	mustn't I be windmilling? mustn't you be windmilling? mustn't she be windmilling? mustn't we be windmilling? mustn't you be windmilling? mustn't they be windmilling?
Perfect	V-ing perfect
mustn't I have windmilled? mustn't you have windmilled? mustn't she have windmilled? mustn't we have windmilled? mustn't you have windmilled? mustn't they have windmilled?	mustn't I have been windmilling? mustn't you have been windmilling? mustn't she have been windmilling? mustn't we have been windmilling? mustn't you have been windmilling? mustn't they have been windmilling?