must insert
Verbo regular: insert - inserted- inserted

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must insert
you must insert
he must insert
we must insert
you must insert
they must insert 	I must be inserting
you must be inserting
he must be inserting
we must be inserting
you must be inserting
they must be inserting	I must have inserted
you must have inserted
he must have inserted
we must have inserted
you must have inserted
they must have inserted	I must have been inserting
you must have been inserting
he must have been inserting
we must have been inserting
you must have been inserting
they must have been inserting	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not insert
you must not insert
he must not insert
we must not insert
you must not insert
they must not insert 	I must not be inserting
you must not be inserting
he must not be inserting
we must not be inserting
you must not be inserting
they must not be inserting	I must not have inserted
you must not have inserted
he must not have inserted
we must not have inserted
you must not have inserted
they must not have inserted	I must not have been inserting
you must not have been inserting
he must not have been inserting
we must not have been inserting
you must not have been inserting
they must not have been inserting	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I insert?
must you insert?
must he insert?
must we insert?
must you insert?
must they insert? 	must I be inserting?
must you be inserting?
must he be inserting?
must we be inserting?
must you be inserting?
must they be inserting? 	must I have inserted?
must you have inserted?
must he have inserted?
must we have inserted?
must you have inserted?
must they have inserted? 	must I have been inserting?
must you have been inserting?
must he have been inserting?
must we have been inserting?
must you have been inserting?
must they have been inserting? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not insert?
must you not insert?
must he not insert?
must we not insert?
must you not insert?
must they not insert? 	must I not be inserting?
must you not be inserting?
must he not be inserting?
must we not be inserting?
must you not be inserting?
must they not be inserting? 	must I not have inserted?
must you not have inserted?
must he not have inserted?
must we not have inserted?
must you not have inserted?
must they not have inserted? 	must I not have been inserting?
must you not have been inserting?
must he not have been inserting?
must we not have been inserting?
must you not have been inserting?
must they not have been inserting?