should tack
Regular verb: tack - tacked- tacked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd tack
you'd tack
she'd tack
we'd tack
you'd tack
they'd tack 	I'd be tacking
you'd be tacking
she'd be tacking
we'd be tacking
you'd be tacking
they'd be tacking	I should've tacked
you should've tacked
she should've tacked
we should've tacked
you should've tacked
they should've tacked	I should've been tacking
you should've been tacking
she should've been tacking
we should've been tacking
you should've been tacking
they should've been tacking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't tack
you shouldn't tack
she shouldn't tack
we shouldn't tack
you shouldn't tack
they shouldn't tack 	I shouldn't be tacking
you shouldn't be tacking
she shouldn't be tacking
we shouldn't be tacking
you shouldn't be tacking
they shouldn't be tacking	I shouldn't have tacked
you shouldn't have tacked
she shouldn't have tacked
we shouldn't have tacked
you shouldn't have tacked
they shouldn't have tacked	I shouldn't have been tacking
you shouldn't have been tacking
she shouldn't have been tacking
we shouldn't have been tacking
you shouldn't have been tacking
they shouldn't have been tacking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I tack?
should you tack?
should she tack?
should we tack?
should you tack?
should they tack? 	should I be tacking?
should you be tacking?
should she be tacking?
should we be tacking?
should you be tacking?
should they be tacking? 	should I have tacked?
should you have tacked?
should she have tacked?
should we have tacked?
should you have tacked?
should they have tacked? 	should I have been tacking?
should you have been tacking?
should she have been tacking?
should we have been tacking?
should you have been tacking?
should they have been tacking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I tack?
shouldn't you tack?
shouldn't she tack?
shouldn't we tack?
shouldn't you tack?
shouldn't they tack? 	shouldn't I be tacking?
shouldn't you be tacking?
shouldn't she be tacking?
shouldn't we be tacking?
shouldn't you be tacking?
shouldn't they be tacking? 	shouldn't I have tacked?
shouldn't you have tacked?
shouldn't she have tacked?
shouldn't we have tacked?
shouldn't you have tacked?
shouldn't they have tacked? 	shouldn't I have been tacking?
shouldn't you have been tacking?
shouldn't she have been tacking?
shouldn't we have been tacking?
shouldn't you have been tacking?
shouldn't they have been tacking?