must gutter
Verbo regular: gutter - guttered- guttered

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must gutter
you must gutter
he must gutter
we must gutter
you must gutter
they must gutter 	I must be guttering
you must be guttering
he must be guttering
we must be guttering
you must be guttering
they must be guttering	I must have guttered
you must have guttered
he must have guttered
we must have guttered
you must have guttered
they must have guttered	I must have been guttering
you must have been guttering
he must have been guttering
we must have been guttering
you must have been guttering
they must have been guttering	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not gutter
you must not gutter
he must not gutter
we must not gutter
you must not gutter
they must not gutter 	I must not be guttering
you must not be guttering
he must not be guttering
we must not be guttering
you must not be guttering
they must not be guttering	I must not have guttered
you must not have guttered
he must not have guttered
we must not have guttered
you must not have guttered
they must not have guttered	I must not have been guttering
you must not have been guttering
he must not have been guttering
we must not have been guttering
you must not have been guttering
they must not have been guttering	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I gutter?
must you gutter?
must he gutter?
must we gutter?
must you gutter?
must they gutter? 	must I be guttering?
must you be guttering?
must he be guttering?
must we be guttering?
must you be guttering?
must they be guttering? 	must I have guttered?
must you have guttered?
must he have guttered?
must we have guttered?
must you have guttered?
must they have guttered? 	must I have been guttering?
must you have been guttering?
must he have been guttering?
must we have been guttering?
must you have been guttering?
must they have been guttering? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not gutter?
must you not gutter?
must he not gutter?
must we not gutter?
must you not gutter?
must they not gutter? 	must I not be guttering?
must you not be guttering?
must he not be guttering?
must we not be guttering?
must you not be guttering?
must they not be guttering? 	must I not have guttered?
must you not have guttered?
must he not have guttered?
must we not have guttered?
must you not have guttered?
must they not have guttered? 	must I not have been guttering?
must you not have been guttering?
must he not have been guttering?
must we not have been guttering?
must you not have been guttering?
must they not have been guttering?