should niello
Regular verb: niello - nielloed- nielloed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd niello
you'd niello
she'd niello
we'd niello
you'd niello
they'd niello 	I'd be nielloing
you'd be nielloing
she'd be nielloing
we'd be nielloing
you'd be nielloing
they'd be nielloing	I should've nielloed
you should've nielloed
she should've nielloed
we should've nielloed
you should've nielloed
they should've nielloed	I should've been nielloing
you should've been nielloing
she should've been nielloing
we should've been nielloing
you should've been nielloing
they should've been nielloing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't niello
you shouldn't niello
she shouldn't niello
we shouldn't niello
you shouldn't niello
they shouldn't niello 	I shouldn't be nielloing
you shouldn't be nielloing
she shouldn't be nielloing
we shouldn't be nielloing
you shouldn't be nielloing
they shouldn't be nielloing	I shouldn't have nielloed
you shouldn't have nielloed
she shouldn't have nielloed
we shouldn't have nielloed
you shouldn't have nielloed
they shouldn't have nielloed	I shouldn't have been nielloing
you shouldn't have been nielloing
she shouldn't have been nielloing
we shouldn't have been nielloing
you shouldn't have been nielloing
they shouldn't have been nielloing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I niello?
should you niello?
should she niello?
should we niello?
should you niello?
should they niello? 	should I be nielloing?
should you be nielloing?
should she be nielloing?
should we be nielloing?
should you be nielloing?
should they be nielloing? 	should I have nielloed?
should you have nielloed?
should she have nielloed?
should we have nielloed?
should you have nielloed?
should they have nielloed? 	should I have been nielloing?
should you have been nielloing?
should she have been nielloing?
should we have been nielloing?
should you have been nielloing?
should they have been nielloing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I niello?
shouldn't you niello?
shouldn't she niello?
shouldn't we niello?
shouldn't you niello?
shouldn't they niello? 	shouldn't I be nielloing?
shouldn't you be nielloing?
shouldn't she be nielloing?
shouldn't we be nielloing?
shouldn't you be nielloing?
shouldn't they be nielloing? 	shouldn't I have nielloed?
shouldn't you have nielloed?
shouldn't she have nielloed?
shouldn't we have nielloed?
shouldn't you have nielloed?
shouldn't they have nielloed? 	shouldn't I have been nielloing?
shouldn't you have been nielloing?
shouldn't she have been nielloing?
shouldn't we have been nielloing?
shouldn't you have been nielloing?
shouldn't they have been nielloing?