should corroborate
Verbo regular: corroborate - corroborated- corroborated

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I'd corroborate
you'd corroborate
he'd corroborate
we'd corroborate
you'd corroborate
they'd corroborate 	I'd be corroborating
you'd be corroborating
he'd be corroborating
we'd be corroborating
you'd be corroborating
they'd be corroborating	I should've corroborated
you should've corroborated
he should've corroborated
we should've corroborated
you should've corroborated
they should've corroborated	I should've been corroborating
you should've been corroborating
he should've been corroborating
we should've been corroborating
you should've been corroborating
they should've been corroborating	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I shouldn't corroborate
you shouldn't corroborate
he shouldn't corroborate
we shouldn't corroborate
you shouldn't corroborate
they shouldn't corroborate 	I shouldn't be corroborating
you shouldn't be corroborating
he shouldn't be corroborating
we shouldn't be corroborating
you shouldn't be corroborating
they shouldn't be corroborating	I shouldn't have corroborated
you shouldn't have corroborated
he shouldn't have corroborated
we shouldn't have corroborated
you shouldn't have corroborated
they shouldn't have corroborated	I shouldn't have been corroborating
you shouldn't have been corroborating
he shouldn't have been corroborating
we shouldn't have been corroborating
you shouldn't have been corroborating
they shouldn't have been corroborating	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I corroborate?
should you corroborate?
should he corroborate?
should we corroborate?
should you corroborate?
should they corroborate? 	should I be corroborating?
should you be corroborating?
should he be corroborating?
should we be corroborating?
should you be corroborating?
should they be corroborating? 	should I have corroborated?
should you have corroborated?
should he have corroborated?
should we have corroborated?
should you have corroborated?
should they have corroborated? 	should I have been corroborating?
should you have been corroborating?
should he have been corroborating?
should we have been corroborating?
should you have been corroborating?
should they have been corroborating? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
shouldn't I corroborate?
shouldn't you corroborate?
shouldn't he corroborate?
shouldn't we corroborate?
shouldn't you corroborate?
shouldn't they corroborate? 	shouldn't I be corroborating?
shouldn't you be corroborating?
shouldn't he be corroborating?
shouldn't we be corroborating?
shouldn't you be corroborating?
shouldn't they be corroborating? 	shouldn't I have corroborated?
shouldn't you have corroborated?
shouldn't he have corroborated?
shouldn't we have corroborated?
shouldn't you have corroborated?
shouldn't they have corroborated? 	shouldn't I have been corroborating?
shouldn't you have been corroborating?
shouldn't he have been corroborating?
shouldn't we have been corroborating?
shouldn't you have been corroborating?
shouldn't they have been corroborating?