must shelter
Verbo regular: shelter - sheltered- sheltered

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must shelter
you must shelter
she must shelter
we must shelter
you must shelter
they must shelter 	I must be sheltering
you must be sheltering
she must be sheltering
we must be sheltering
you must be sheltering
they must be sheltering	I must have sheltered
you must have sheltered
she must have sheltered
we must have sheltered
you must have sheltered
they must have sheltered	I must have been sheltering
you must have been sheltering
she must have been sheltering
we must have been sheltering
you must have been sheltering
they must have been sheltering	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't shelter
you mustn't shelter
she mustn't shelter
we mustn't shelter
you mustn't shelter
they mustn't shelter 	I mustn't be sheltering
you mustn't be sheltering
she mustn't be sheltering
we mustn't be sheltering
you mustn't be sheltering
they mustn't be sheltering	I mustn't have sheltered
you mustn't have sheltered
she mustn't have sheltered
we mustn't have sheltered
you mustn't have sheltered
they mustn't have sheltered	I mustn't have been sheltering
you mustn't have been sheltering
she mustn't have been sheltering
we mustn't have been sheltering
you mustn't have been sheltering
they mustn't have been sheltering	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I shelter?
must you shelter?
must she shelter?
must we shelter?
must you shelter?
must they shelter? 	must I be sheltering?
must you be sheltering?
must she be sheltering?
must we be sheltering?
must you be sheltering?
must they be sheltering? 	must I have sheltered?
must you have sheltered?
must she have sheltered?
must we have sheltered?
must you have sheltered?
must they have sheltered? 	must I have been sheltering?
must you have been sheltering?
must she have been sheltering?
must we have been sheltering?
must you have been sheltering?
must they have been sheltering? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I shelter?
mustn't you shelter?
mustn't she shelter?
mustn't we shelter?
mustn't you shelter?
mustn't they shelter? 	mustn't I be sheltering?
mustn't you be sheltering?
mustn't she be sheltering?
mustn't we be sheltering?
mustn't you be sheltering?
mustn't they be sheltering? 	mustn't I have sheltered?
mustn't you have sheltered?
mustn't she have sheltered?
mustn't we have sheltered?
mustn't you have sheltered?
mustn't they have sheltered? 	mustn't I have been sheltering?
mustn't you have been sheltering?
mustn't she have been sheltering?
mustn't we have been sheltering?
mustn't you have been sheltering?
mustn't they have been sheltering?