should snag
Regular verb: snag - snagged- snagged

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd snag
you'd snag
he'd snag
we'd snag
you'd snag
they'd snag 	I'd be snagging
you'd be snagging
he'd be snagging
we'd be snagging
you'd be snagging
they'd be snagging	I should've snagged
you should've snagged
he should've snagged
we should've snagged
you should've snagged
they should've snagged	I should've been snagging
you should've been snagging
he should've been snagging
we should've been snagging
you should've been snagging
they should've been snagging	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't snag
you shouldn't snag
he shouldn't snag
we shouldn't snag
you shouldn't snag
they shouldn't snag 	I shouldn't be snagging
you shouldn't be snagging
he shouldn't be snagging
we shouldn't be snagging
you shouldn't be snagging
they shouldn't be snagging	I shouldn't have snagged
you shouldn't have snagged
he shouldn't have snagged
we shouldn't have snagged
you shouldn't have snagged
they shouldn't have snagged	I shouldn't have been snagging
you shouldn't have been snagging
he shouldn't have been snagging
we shouldn't have been snagging
you shouldn't have been snagging
they shouldn't have been snagging	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I snag?
should you snag?
should he snag?
should we snag?
should you snag?
should they snag? 	should I be snagging?
should you be snagging?
should he be snagging?
should we be snagging?
should you be snagging?
should they be snagging? 	should I have snagged?
should you have snagged?
should he have snagged?
should we have snagged?
should you have snagged?
should they have snagged? 	should I have been snagging?
should you have been snagging?
should he have been snagging?
should we have been snagging?
should you have been snagging?
should they have been snagging? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I snag?
shouldn't you snag?
shouldn't he snag?
shouldn't we snag?
shouldn't you snag?
shouldn't they snag? 	shouldn't I be snagging?
shouldn't you be snagging?
shouldn't he be snagging?
shouldn't we be snagging?
shouldn't you be snagging?
shouldn't they be snagging? 	shouldn't I have snagged?
shouldn't you have snagged?
shouldn't he have snagged?
shouldn't we have snagged?
shouldn't you have snagged?
shouldn't they have snagged? 	shouldn't I have been snagging?
shouldn't you have been snagging?
shouldn't he have been snagging?
shouldn't we have been snagging?
shouldn't you have been snagging?
shouldn't they have been snagging?