should tub
Regular verb: tub - tubbed- tubbed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd tub
you'd tub
he'd tub
we'd tub
you'd tub
they'd tub 	I'd be tubbing
you'd be tubbing
he'd be tubbing
we'd be tubbing
you'd be tubbing
they'd be tubbing	I should've tubbed
you should've tubbed
he should've tubbed
we should've tubbed
you should've tubbed
they should've tubbed	I should've been tubbing
you should've been tubbing
he should've been tubbing
we should've been tubbing
you should've been tubbing
they should've been tubbing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't tub
you shouldn't tub
he shouldn't tub
we shouldn't tub
you shouldn't tub
they shouldn't tub 	I shouldn't be tubbing
you shouldn't be tubbing
he shouldn't be tubbing
we shouldn't be tubbing
you shouldn't be tubbing
they shouldn't be tubbing	I shouldn't have tubbed
you shouldn't have tubbed
he shouldn't have tubbed
we shouldn't have tubbed
you shouldn't have tubbed
they shouldn't have tubbed	I shouldn't have been tubbing
you shouldn't have been tubbing
he shouldn't have been tubbing
we shouldn't have been tubbing
you shouldn't have been tubbing
they shouldn't have been tubbing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I tub?
should you tub?
should he tub?
should we tub?
should you tub?
should they tub? 	should I be tubbing?
should you be tubbing?
should he be tubbing?
should we be tubbing?
should you be tubbing?
should they be tubbing? 	should I have tubbed?
should you have tubbed?
should he have tubbed?
should we have tubbed?
should you have tubbed?
should they have tubbed? 	should I have been tubbing?
should you have been tubbing?
should he have been tubbing?
should we have been tubbing?
should you have been tubbing?
should they have been tubbing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I tub?
shouldn't you tub?
shouldn't he tub?
shouldn't we tub?
shouldn't you tub?
shouldn't they tub? 	shouldn't I be tubbing?
shouldn't you be tubbing?
shouldn't he be tubbing?
shouldn't we be tubbing?
shouldn't you be tubbing?
shouldn't they be tubbing? 	shouldn't I have tubbed?
shouldn't you have tubbed?
shouldn't he have tubbed?
shouldn't we have tubbed?
shouldn't you have tubbed?
shouldn't they have tubbed? 	shouldn't I have been tubbing?
shouldn't you have been tubbing?
shouldn't he have been tubbing?
shouldn't we have been tubbing?
shouldn't you have been tubbing?
shouldn't they have been tubbing?