English verb conjugation
SHOULD TUG

Regular verb: tug - tugged - tugged

Affirmation

Simple form	V-ing form
I'd tug you'd tug he'd tug we'd tug you'd tug they'd tug	I'd be tugging you'd be tugging he'd be tugging we'd be tugging you'd be tugging they'd be tugging
Perfect	V-ing perfect
I should've tugged you should've tugged he should've tugged we should've tugged you should've tugged they should've tugged	I should've been tugging you should've been tugging he should've been tugging we should've been tugging you should've been tugging they should've been tugging

Negation

Simple form	V-ing form
I shouldn't tug you shouldn't tug he shouldn't tug we shouldn't tug you shouldn't tug they shouldn't tug	I shouldn't be tugging you shouldn't be tugging he shouldn't be tugging we shouldn't be tugging you shouldn't be tugging they shouldn't be tugging
Perfect	V-ing perfect
I shouldn't have tugged you shouldn't have tugged he shouldn't have tugged we shouldn't have tugged you shouldn't have tugged they shouldn't have tugged	I shouldn't have been tugging you shouldn't have been tugging he shouldn't have been tugging we shouldn't have been tugging you shouldn't have been tugging they shouldn't have been tugging

Interrogative form

Simple form	V-ing form
should I tug? should you tug? should he tug? should we tug? should you tug? should they tug?	should I be tugging? should you be tugging? should he be tugging? should we be tugging? should you be tugging? should they be tugging?
Perfect	V-ing perfect
should I have tugged? should you have tugged? should he have tugged? should we have tugged? should you have tugged? should they have tugged?	should I have been tugging? should you have been tugging? should he have been tugging? should we have been tugging? should you have been tugging? should they have been tugging?

Interro-negative form

Simple form	V-ing form
shouldn't I tug? shouldn't you tug? shouldn't he tug? shouldn't we tug? shouldn't you tug? shouldn't they tug?	shouldn't I be tugging? shouldn't you be tugging? shouldn't he be tugging? shouldn't we be tugging? shouldn't you be tugging? shouldn't they be tugging?
Perfect	V-ing perfect
shouldn't I have tugged? shouldn't you have tugged? shouldn't he have tugged? shouldn't we have tugged? shouldn't you have tugged? shouldn't they have tugged?	shouldn't I have been tugging? shouldn't you have been tugging? shouldn't he have been tugging? shouldn't we have been tugging? shouldn't you have been tugging? shouldn't they have been tugging?