must presterilize
Verbo regular: presterilize - presterilized- presterilized

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must presterilize
you must presterilize
he must presterilize
we must presterilize
you must presterilize
they must presterilize 	I must be presterilizing
you must be presterilizing
he must be presterilizing
we must be presterilizing
you must be presterilizing
they must be presterilizing	I must have presterilized
you must have presterilized
he must have presterilized
we must have presterilized
you must have presterilized
they must have presterilized	I must have been presterilizing
you must have been presterilizing
he must have been presterilizing
we must have been presterilizing
you must have been presterilizing
they must have been presterilizing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not presterilize
you must not presterilize
he must not presterilize
we must not presterilize
you must not presterilize
they must not presterilize 	I must not be presterilizing
you must not be presterilizing
he must not be presterilizing
we must not be presterilizing
you must not be presterilizing
they must not be presterilizing	I must not have presterilized
you must not have presterilized
he must not have presterilized
we must not have presterilized
you must not have presterilized
they must not have presterilized	I must not have been presterilizing
you must not have been presterilizing
he must not have been presterilizing
we must not have been presterilizing
you must not have been presterilizing
they must not have been presterilizing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I presterilize?
must you presterilize?
must he presterilize?
must we presterilize?
must you presterilize?
must they presterilize? 	must I be presterilizing?
must you be presterilizing?
must he be presterilizing?
must we be presterilizing?
must you be presterilizing?
must they be presterilizing? 	must I have presterilized?
must you have presterilized?
must he have presterilized?
must we have presterilized?
must you have presterilized?
must they have presterilized? 	must I have been presterilizing?
must you have been presterilizing?
must he have been presterilizing?
must we have been presterilizing?
must you have been presterilizing?
must they have been presterilizing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not presterilize?
must you not presterilize?
must he not presterilize?
must we not presterilize?
must you not presterilize?
must they not presterilize? 	must I not be presterilizing?
must you not be presterilizing?
must he not be presterilizing?
must we not be presterilizing?
must you not be presterilizing?
must they not be presterilizing? 	must I not have presterilized?
must you not have presterilized?
must he not have presterilized?
must we not have presterilized?
must you not have presterilized?
must they not have presterilized? 	must I not have been presterilizing?
must you not have been presterilizing?
must he not have been presterilizing?
must we not have been presterilizing?
must you not have been presterilizing?
must they not have been presterilizing?