must window-shop
Verbo regular: window-shop - window-shoped- window-shoped

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must window-shop
you must window-shop
he must window-shop
we must window-shop
you must window-shop
they must window-shop 	I must be window-shoping
you must be window-shoping
he must be window-shoping
we must be window-shoping
you must be window-shoping
they must be window-shoping	I must have window-shoped
you must have window-shoped
he must have window-shoped
we must have window-shoped
you must have window-shoped
they must have window-shoped	I must have been window-shoping
you must have been window-shoping
he must have been window-shoping
we must have been window-shoping
you must have been window-shoping
they must have been window-shoping	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not window-shop
you must not window-shop
he must not window-shop
we must not window-shop
you must not window-shop
they must not window-shop 	I must not be window-shoping
you must not be window-shoping
he must not be window-shoping
we must not be window-shoping
you must not be window-shoping
they must not be window-shoping	I must not have window-shoped
you must not have window-shoped
he must not have window-shoped
we must not have window-shoped
you must not have window-shoped
they must not have window-shoped	I must not have been window-shoping
you must not have been window-shoping
he must not have been window-shoping
we must not have been window-shoping
you must not have been window-shoping
they must not have been window-shoping	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I window-shop?
must you window-shop?
must he window-shop?
must we window-shop?
must you window-shop?
must they window-shop? 	must I be window-shoping?
must you be window-shoping?
must he be window-shoping?
must we be window-shoping?
must you be window-shoping?
must they be window-shoping? 	must I have window-shoped?
must you have window-shoped?
must he have window-shoped?
must we have window-shoped?
must you have window-shoped?
must they have window-shoped? 	must I have been window-shoping?
must you have been window-shoping?
must he have been window-shoping?
must we have been window-shoping?
must you have been window-shoping?
must they have been window-shoping? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not window-shop?
must you not window-shop?
must he not window-shop?
must we not window-shop?
must you not window-shop?
must they not window-shop? 	must I not be window-shoping?
must you not be window-shoping?
must he not be window-shoping?
must we not be window-shoping?
must you not be window-shoping?
must they not be window-shoping? 	must I not have window-shoped?
must you not have window-shoped?
must he not have window-shoped?
must we not have window-shoped?
must you not have window-shoped?
must they not have window-shoped? 	must I not have been window-shoping?
must you not have been window-shoping?
must he not have been window-shoping?
must we not have been window-shoping?
must you not have been window-shoping?
must they not have been window-shoping?