should snigger
Verbo regular: snigger - sniggered- sniggered

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I should snigger
you should snigger
she should snigger
we should snigger
you should snigger
they should snigger 	I should be sniggering
you should be sniggering
she should be sniggering
we should be sniggering
you should be sniggering
they should be sniggering	I should have sniggered
you should have sniggered
she should have sniggered
we should have sniggered
you should have sniggered
they should have sniggered	I should have been sniggering
you should have been sniggering
she should have been sniggering
we should have been sniggering
you should have been sniggering
they should have been sniggering	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I should not snigger
you should not snigger
she should not snigger
we should not snigger
you should not snigger
they should not snigger 	I should not be sniggering
you should not be sniggering
she should not be sniggering
we should not be sniggering
you should not be sniggering
they should not be sniggering	I should not have sniggered
you should not have sniggered
she should not have sniggered
we should not have sniggered
you should not have sniggered
they should not have sniggered	I should not have been sniggering
you should not have been sniggering
she should not have been sniggering
we should not have been sniggering
you should not have been sniggering
they should not have been sniggering	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I snigger?
should you snigger?
should she snigger?
should we snigger?
should you snigger?
should they snigger? 	should I be sniggering?
should you be sniggering?
should she be sniggering?
should we be sniggering?
should you be sniggering?
should they be sniggering? 	should I have sniggered?
should you have sniggered?
should she have sniggered?
should we have sniggered?
should you have sniggered?
should they have sniggered? 	should I have been sniggering?
should you have been sniggering?
should she have been sniggering?
should we have been sniggering?
should you have been sniggering?
should they have been sniggering? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I not snigger?
should you not snigger?
should she not snigger?
should we not snigger?
should you not snigger?
should they not snigger? 	should I not be sniggering?
should you not be sniggering?
should she not be sniggering?
should we not be sniggering?
should you not be sniggering?
should they not be sniggering? 	should I not have sniggered?
should you not have sniggered?
should she not have sniggered?
should we not have sniggered?
should you not have sniggered?
should they not have sniggered? 	should I not have been sniggering?
should you not have been sniggering?
should she not have been sniggering?
should we not have been sniggering?
should you not have been sniggering?
should they not have been sniggering?