should bull
Regular verb: bull - bulled- bulled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd bull
you'd bull
she'd bull
we'd bull
you'd bull
they'd bull 	I'd be bulling
you'd be bulling
she'd be bulling
we'd be bulling
you'd be bulling
they'd be bulling	I should've bulled
you should've bulled
she should've bulled
we should've bulled
you should've bulled
they should've bulled	I should've been bulling
you should've been bulling
she should've been bulling
we should've been bulling
you should've been bulling
they should've been bulling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't bull
you shouldn't bull
she shouldn't bull
we shouldn't bull
you shouldn't bull
they shouldn't bull 	I shouldn't be bulling
you shouldn't be bulling
she shouldn't be bulling
we shouldn't be bulling
you shouldn't be bulling
they shouldn't be bulling	I shouldn't have bulled
you shouldn't have bulled
she shouldn't have bulled
we shouldn't have bulled
you shouldn't have bulled
they shouldn't have bulled	I shouldn't have been bulling
you shouldn't have been bulling
she shouldn't have been bulling
we shouldn't have been bulling
you shouldn't have been bulling
they shouldn't have been bulling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I bull?
should you bull?
should she bull?
should we bull?
should you bull?
should they bull? 	should I be bulling?
should you be bulling?
should she be bulling?
should we be bulling?
should you be bulling?
should they be bulling? 	should I have bulled?
should you have bulled?
should she have bulled?
should we have bulled?
should you have bulled?
should they have bulled? 	should I have been bulling?
should you have been bulling?
should she have been bulling?
should we have been bulling?
should you have been bulling?
should they have been bulling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I bull?
shouldn't you bull?
shouldn't she bull?
shouldn't we bull?
shouldn't you bull?
shouldn't they bull? 	shouldn't I be bulling?
shouldn't you be bulling?
shouldn't she be bulling?
shouldn't we be bulling?
shouldn't you be bulling?
shouldn't they be bulling? 	shouldn't I have bulled?
shouldn't you have bulled?
shouldn't she have bulled?
shouldn't we have bulled?
shouldn't you have bulled?
shouldn't they have bulled? 	shouldn't I have been bulling?
shouldn't you have been bulling?
shouldn't she have been bulling?
shouldn't we have been bulling?
shouldn't you have been bulling?
shouldn't they have been bulling?