should zigzag
Regular verb: zigzag - zigzagged- zigzagged

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd zigzag
you'd zigzag
she'd zigzag
we'd zigzag
you'd zigzag
they'd zigzag 	I'd be zigzagging
you'd be zigzagging
she'd be zigzagging
we'd be zigzagging
you'd be zigzagging
they'd be zigzagging	I should've zigzagged
you should've zigzagged
she should've zigzagged
we should've zigzagged
you should've zigzagged
they should've zigzagged	I should've been zigzagging
you should've been zigzagging
she should've been zigzagging
we should've been zigzagging
you should've been zigzagging
they should've been zigzagging	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't zigzag
you shouldn't zigzag
she shouldn't zigzag
we shouldn't zigzag
you shouldn't zigzag
they shouldn't zigzag 	I shouldn't be zigzagging
you shouldn't be zigzagging
she shouldn't be zigzagging
we shouldn't be zigzagging
you shouldn't be zigzagging
they shouldn't be zigzagging	I shouldn't have zigzagged
you shouldn't have zigzagged
she shouldn't have zigzagged
we shouldn't have zigzagged
you shouldn't have zigzagged
they shouldn't have zigzagged	I shouldn't have been zigzagging
you shouldn't have been zigzagging
she shouldn't have been zigzagging
we shouldn't have been zigzagging
you shouldn't have been zigzagging
they shouldn't have been zigzagging	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I zigzag?
should you zigzag?
should she zigzag?
should we zigzag?
should you zigzag?
should they zigzag? 	should I be zigzagging?
should you be zigzagging?
should she be zigzagging?
should we be zigzagging?
should you be zigzagging?
should they be zigzagging? 	should I have zigzagged?
should you have zigzagged?
should she have zigzagged?
should we have zigzagged?
should you have zigzagged?
should they have zigzagged? 	should I have been zigzagging?
should you have been zigzagging?
should she have been zigzagging?
should we have been zigzagging?
should you have been zigzagging?
should they have been zigzagging? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I zigzag?
shouldn't you zigzag?
shouldn't she zigzag?
shouldn't we zigzag?
shouldn't you zigzag?
shouldn't they zigzag? 	shouldn't I be zigzagging?
shouldn't you be zigzagging?
shouldn't she be zigzagging?
shouldn't we be zigzagging?
shouldn't you be zigzagging?
shouldn't they be zigzagging? 	shouldn't I have zigzagged?
shouldn't you have zigzagged?
shouldn't she have zigzagged?
shouldn't we have zigzagged?
shouldn't you have zigzagged?
shouldn't they have zigzagged? 	shouldn't I have been zigzagging?
shouldn't you have been zigzagging?
shouldn't she have been zigzagging?
shouldn't we have been zigzagging?
shouldn't you have been zigzagging?
shouldn't they have been zigzagging?