must regroup
Verbo regular: regroup - regrouped- regrouped

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must regroup
you must regroup
he must regroup
we must regroup
you must regroup
they must regroup 	I must be regrouping
you must be regrouping
he must be regrouping
we must be regrouping
you must be regrouping
they must be regrouping	I must have regrouped
you must have regrouped
he must have regrouped
we must have regrouped
you must have regrouped
they must have regrouped	I must have been regrouping
you must have been regrouping
he must have been regrouping
we must have been regrouping
you must have been regrouping
they must have been regrouping	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not regroup
you must not regroup
he must not regroup
we must not regroup
you must not regroup
they must not regroup 	I must not be regrouping
you must not be regrouping
he must not be regrouping
we must not be regrouping
you must not be regrouping
they must not be regrouping	I must not have regrouped
you must not have regrouped
he must not have regrouped
we must not have regrouped
you must not have regrouped
they must not have regrouped	I must not have been regrouping
you must not have been regrouping
he must not have been regrouping
we must not have been regrouping
you must not have been regrouping
they must not have been regrouping	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I regroup?
must you regroup?
must he regroup?
must we regroup?
must you regroup?
must they regroup? 	must I be regrouping?
must you be regrouping?
must he be regrouping?
must we be regrouping?
must you be regrouping?
must they be regrouping? 	must I have regrouped?
must you have regrouped?
must he have regrouped?
must we have regrouped?
must you have regrouped?
must they have regrouped? 	must I have been regrouping?
must you have been regrouping?
must he have been regrouping?
must we have been regrouping?
must you have been regrouping?
must they have been regrouping? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not regroup?
must you not regroup?
must he not regroup?
must we not regroup?
must you not regroup?
must they not regroup? 	must I not be regrouping?
must you not be regrouping?
must he not be regrouping?
must we not be regrouping?
must you not be regrouping?
must they not be regrouping? 	must I not have regrouped?
must you not have regrouped?
must he not have regrouped?
must we not have regrouped?
must you not have regrouped?
must they not have regrouped? 	must I not have been regrouping?
must you not have been regrouping?
must he not have been regrouping?
must we not have been regrouping?
must you not have been regrouping?
must they not have been regrouping?