must involve
Verbo regular: involve - involved- involved

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must involve
you must involve
he must involve
we must involve
you must involve
they must involve 	I must be involving
you must be involving
he must be involving
we must be involving
you must be involving
they must be involving	I must have involved
you must have involved
he must have involved
we must have involved
you must have involved
they must have involved	I must have been involving
you must have been involving
he must have been involving
we must have been involving
you must have been involving
they must have been involving	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't involve
you mustn't involve
he mustn't involve
we mustn't involve
you mustn't involve
they mustn't involve 	I mustn't be involving
you mustn't be involving
he mustn't be involving
we mustn't be involving
you mustn't be involving
they mustn't be involving	I mustn't have involved
you mustn't have involved
he mustn't have involved
we mustn't have involved
you mustn't have involved
they mustn't have involved	I mustn't have been involving
you mustn't have been involving
he mustn't have been involving
we mustn't have been involving
you mustn't have been involving
they mustn't have been involving	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I involve?
must you involve?
must he involve?
must we involve?
must you involve?
must they involve? 	must I be involving?
must you be involving?
must he be involving?
must we be involving?
must you be involving?
must they be involving? 	must I have involved?
must you have involved?
must he have involved?
must we have involved?
must you have involved?
must they have involved? 	must I have been involving?
must you have been involving?
must he have been involving?
must we have been involving?
must you have been involving?
must they have been involving? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I involve?
mustn't you involve?
mustn't he involve?
mustn't we involve?
mustn't you involve?
mustn't they involve? 	mustn't I be involving?
mustn't you be involving?
mustn't he be involving?
mustn't we be involving?
mustn't you be involving?
mustn't they be involving? 	mustn't I have involved?
mustn't you have involved?
mustn't he have involved?
mustn't we have involved?
mustn't you have involved?
mustn't they have involved? 	mustn't I have been involving?
mustn't you have been involving?
mustn't he have been involving?
mustn't we have been involving?
mustn't you have been involving?
mustn't they have been involving?