must group
Verbo regular: group - grouped- grouped

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must group
you must group
he must group
we must group
you must group
they must group 	I must be grouping
you must be grouping
he must be grouping
we must be grouping
you must be grouping
they must be grouping	I must have grouped
you must have grouped
he must have grouped
we must have grouped
you must have grouped
they must have grouped	I must have been grouping
you must have been grouping
he must have been grouping
we must have been grouping
you must have been grouping
they must have been grouping	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not group
you must not group
he must not group
we must not group
you must not group
they must not group 	I must not be grouping
you must not be grouping
he must not be grouping
we must not be grouping
you must not be grouping
they must not be grouping	I must not have grouped
you must not have grouped
he must not have grouped
we must not have grouped
you must not have grouped
they must not have grouped	I must not have been grouping
you must not have been grouping
he must not have been grouping
we must not have been grouping
you must not have been grouping
they must not have been grouping	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I group?
must you group?
must he group?
must we group?
must you group?
must they group? 	must I be grouping?
must you be grouping?
must he be grouping?
must we be grouping?
must you be grouping?
must they be grouping? 	must I have grouped?
must you have grouped?
must he have grouped?
must we have grouped?
must you have grouped?
must they have grouped? 	must I have been grouping?
must you have been grouping?
must he have been grouping?
must we have been grouping?
must you have been grouping?
must they have been grouping? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not group?
must you not group?
must he not group?
must we not group?
must you not group?
must they not group? 	must I not be grouping?
must you not be grouping?
must he not be grouping?
must we not be grouping?
must you not be grouping?
must they not be grouping? 	must I not have grouped?
must you not have grouped?
must he not have grouped?
must we not have grouped?
must you not have grouped?
must they not have grouped? 	must I not have been grouping?
must you not have been grouping?
must he not have been grouping?
must we not have been grouping?
must you not have been grouping?
must they not have been grouping?