must substantiate
Verbo regolare: substantiate - substantiated- substantiated

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I must substantiate
you must substantiate
he must substantiate
we must substantiate
you must substantiate
they must substantiate 	I must be substantiating
you must be substantiating
he must be substantiating
we must be substantiating
you must be substantiating
they must be substantiating	I must have substantiated
you must have substantiated
he must have substantiated
we must have substantiated
you must have substantiated
they must have substantiated	I must have been substantiating
you must have been substantiating
he must have been substantiating
we must have been substantiating
you must have been substantiating
they must have been substantiating	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I must not substantiate
you must not substantiate
he must not substantiate
we must not substantiate
you must not substantiate
they must not substantiate 	I must not be substantiating
you must not be substantiating
he must not be substantiating
we must not be substantiating
you must not be substantiating
they must not be substantiating	I must not have substantiated
you must not have substantiated
he must not have substantiated
we must not have substantiated
you must not have substantiated
they must not have substantiated	I must not have been substantiating
you must not have been substantiating
he must not have been substantiating
we must not have been substantiating
you must not have been substantiating
they must not have been substantiating	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
must I substantiate?
must you substantiate?
must he substantiate?
must we substantiate?
must you substantiate?
must they substantiate? 	must I be substantiating?
must you be substantiating?
must he be substantiating?
must we be substantiating?
must you be substantiating?
must they be substantiating? 	must I have substantiated?
must you have substantiated?
must he have substantiated?
must we have substantiated?
must you have substantiated?
must they have substantiated? 	must I have been substantiating?
must you have been substantiating?
must he have been substantiating?
must we have been substantiating?
must you have been substantiating?
must they have been substantiating? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
must I not substantiate?
must you not substantiate?
must he not substantiate?
must we not substantiate?
must you not substantiate?
must they not substantiate? 	must I not be substantiating?
must you not be substantiating?
must he not be substantiating?
must we not be substantiating?
must you not be substantiating?
must they not be substantiating? 	must I not have substantiated?
must you not have substantiated?
must he not have substantiated?
must we not have substantiated?
must you not have substantiated?
must they not have substantiated? 	must I not have been substantiating?
must you not have been substantiating?
must he not have been substantiating?
must we not have been substantiating?
must you not have been substantiating?
must they not have been substantiating?