must squirrel
Verbo regular: squirrel - squirreled- squirreled

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must squirrel
you must squirrel
she must squirrel
we must squirrel
you must squirrel
they must squirrel 	I must be squirreling
you must be squirreling
she must be squirreling
we must be squirreling
you must be squirreling
they must be squirreling	I must have squirreled
you must have squirreled
she must have squirreled
we must have squirreled
you must have squirreled
they must have squirreled	I must have been squirreling
you must have been squirreling
she must have been squirreling
we must have been squirreling
you must have been squirreling
they must have been squirreling	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not squirrel
you must not squirrel
she must not squirrel
we must not squirrel
you must not squirrel
they must not squirrel 	I must not be squirreling
you must not be squirreling
she must not be squirreling
we must not be squirreling
you must not be squirreling
they must not be squirreling	I must not have squirreled
you must not have squirreled
she must not have squirreled
we must not have squirreled
you must not have squirreled
they must not have squirreled	I must not have been squirreling
you must not have been squirreling
she must not have been squirreling
we must not have been squirreling
you must not have been squirreling
they must not have been squirreling	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I squirrel?
must you squirrel?
must she squirrel?
must we squirrel?
must you squirrel?
must they squirrel? 	must I be squirreling?
must you be squirreling?
must she be squirreling?
must we be squirreling?
must you be squirreling?
must they be squirreling? 	must I have squirreled?
must you have squirreled?
must she have squirreled?
must we have squirreled?
must you have squirreled?
must they have squirreled? 	must I have been squirreling?
must you have been squirreling?
must she have been squirreling?
must we have been squirreling?
must you have been squirreling?
must they have been squirreling? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not squirrel?
must you not squirrel?
must she not squirrel?
must we not squirrel?
must you not squirrel?
must they not squirrel? 	must I not be squirreling?
must you not be squirreling?
must she not be squirreling?
must we not be squirreling?
must you not be squirreling?
must they not be squirreling? 	must I not have squirreled?
must you not have squirreled?
must she not have squirreled?
must we not have squirreled?
must you not have squirreled?
must they not have squirreled? 	must I not have been squirreling?
must you not have been squirreling?
must she not have been squirreling?
must we not have been squirreling?
must you not have been squirreling?
must they not have been squirreling?