must pinwheel
Regular verb: pinwheel - pinwheeled- pinwheeled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must pinwheel
you must pinwheel
she must pinwheel
we must pinwheel
you must pinwheel
they must pinwheel 	I must be pinwheeling
you must be pinwheeling
she must be pinwheeling
we must be pinwheeling
you must be pinwheeling
they must be pinwheeling	I must have pinwheeled
you must have pinwheeled
she must have pinwheeled
we must have pinwheeled
you must have pinwheeled
they must have pinwheeled	I must have been pinwheeling
you must have been pinwheeling
she must have been pinwheeling
we must have been pinwheeling
you must have been pinwheeling
they must have been pinwheeling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't pinwheel
you mustn't pinwheel
she mustn't pinwheel
we mustn't pinwheel
you mustn't pinwheel
they mustn't pinwheel 	I mustn't be pinwheeling
you mustn't be pinwheeling
she mustn't be pinwheeling
we mustn't be pinwheeling
you mustn't be pinwheeling
they mustn't be pinwheeling	I mustn't have pinwheeled
you mustn't have pinwheeled
she mustn't have pinwheeled
we mustn't have pinwheeled
you mustn't have pinwheeled
they mustn't have pinwheeled	I mustn't have been pinwheeling
you mustn't have been pinwheeling
she mustn't have been pinwheeling
we mustn't have been pinwheeling
you mustn't have been pinwheeling
they mustn't have been pinwheeling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I pinwheel?
must you pinwheel?
must she pinwheel?
must we pinwheel?
must you pinwheel?
must they pinwheel? 	must I be pinwheeling?
must you be pinwheeling?
must she be pinwheeling?
must we be pinwheeling?
must you be pinwheeling?
must they be pinwheeling? 	must I have pinwheeled?
must you have pinwheeled?
must she have pinwheeled?
must we have pinwheeled?
must you have pinwheeled?
must they have pinwheeled? 	must I have been pinwheeling?
must you have been pinwheeling?
must she have been pinwheeling?
must we have been pinwheeling?
must you have been pinwheeling?
must they have been pinwheeling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I pinwheel?
mustn't you pinwheel?
mustn't she pinwheel?
mustn't we pinwheel?
mustn't you pinwheel?
mustn't they pinwheel? 	mustn't I be pinwheeling?
mustn't you be pinwheeling?
mustn't she be pinwheeling?
mustn't we be pinwheeling?
mustn't you be pinwheeling?
mustn't they be pinwheeling? 	mustn't I have pinwheeled?
mustn't you have pinwheeled?
mustn't she have pinwheeled?
mustn't we have pinwheeled?
mustn't you have pinwheeled?
mustn't they have pinwheeled? 	mustn't I have been pinwheeling?
mustn't you have been pinwheeling?
mustn't she have been pinwheeling?
mustn't we have been pinwheeling?
mustn't you have been pinwheeling?
mustn't they have been pinwheeling?