can substantiate
Verbo regular: substantiate - substantiated- substantiated

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can substantiate
you can substantiate
she can substantiate
we can substantiate
you can substantiate
they can substantiate 	I can be substantiating
you can be substantiating
she can be substantiating
we can be substantiating
you can be substantiating
they can be substantiating	I can have substantiated
you can have substantiated
she can have substantiated
we can have substantiated
you can have substantiated
they can have substantiated	I can have been substantiating
you can have been substantiating
she can have been substantiating
we can have been substantiating
you can have been substantiating
they can have been substantiating	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I cannot substantiate
you cannot substantiate
she cannot substantiate
we cannot substantiate
you cannot substantiate
they cannot substantiate 	I cannot be substantiating
you cannot be substantiating
she cannot be substantiating
we cannot be substantiating
you cannot be substantiating
they cannot be substantiating	I cannot have substantiated
you cannot have substantiated
she cannot have substantiated
we cannot have substantiated
you cannot have substantiated
they cannot have substantiated	I cannot have been substantiating
you cannot have been substantiating
she cannot have been substantiating
we cannot have been substantiating
you cannot have been substantiating
they cannot have been substantiating	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I substantiate?
can you substantiate?
can she substantiate?
can we substantiate?
can you substantiate?
can they substantiate? 	can I be substantiating?
can you be substantiating?
can she be substantiating?
can we be substantiating?
can you be substantiating?
can they be substantiating? 	can I have substantiated?
can you have substantiated?
can she have substantiated?
can we have substantiated?
can you have substantiated?
can they have substantiated? 	can I have been substantiating?
can you have been substantiating?
can she have been substantiating?
can we have been substantiating?
can you have been substantiating?
can they have been substantiating? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I not substantiate?
can you not substantiate?
can she not substantiate?
can we not substantiate?
can you not substantiate?
can they not substantiate? 	can I not be substantiating?
can you not be substantiating?
can she not be substantiating?
can we not be substantiating?
can you not be substantiating?
can they not be substantiating? 	can I not have substantiated?
can you not have substantiated?
can she not have substantiated?
can we not have substantiated?
can you not have substantiated?
can they not have substantiated? 	can I not have been substantiating?
can you not have been substantiating?
can she not have been substantiating?
can we not have been substantiating?
can you not have been substantiating?
can they not have been substantiating?