should foul
Regular verb: foul - fouled- fouled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd foul
you'd foul
he'd foul
we'd foul
you'd foul
they'd foul 	I'd be fouling
you'd be fouling
he'd be fouling
we'd be fouling
you'd be fouling
they'd be fouling	I should've fouled
you should've fouled
he should've fouled
we should've fouled
you should've fouled
they should've fouled	I should've been fouling
you should've been fouling
he should've been fouling
we should've been fouling
you should've been fouling
they should've been fouling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't foul
you shouldn't foul
he shouldn't foul
we shouldn't foul
you shouldn't foul
they shouldn't foul 	I shouldn't be fouling
you shouldn't be fouling
he shouldn't be fouling
we shouldn't be fouling
you shouldn't be fouling
they shouldn't be fouling	I shouldn't have fouled
you shouldn't have fouled
he shouldn't have fouled
we shouldn't have fouled
you shouldn't have fouled
they shouldn't have fouled	I shouldn't have been fouling
you shouldn't have been fouling
he shouldn't have been fouling
we shouldn't have been fouling
you shouldn't have been fouling
they shouldn't have been fouling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I foul?
should you foul?
should he foul?
should we foul?
should you foul?
should they foul? 	should I be fouling?
should you be fouling?
should he be fouling?
should we be fouling?
should you be fouling?
should they be fouling? 	should I have fouled?
should you have fouled?
should he have fouled?
should we have fouled?
should you have fouled?
should they have fouled? 	should I have been fouling?
should you have been fouling?
should he have been fouling?
should we have been fouling?
should you have been fouling?
should they have been fouling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I foul?
shouldn't you foul?
shouldn't he foul?
shouldn't we foul?
shouldn't you foul?
shouldn't they foul? 	shouldn't I be fouling?
shouldn't you be fouling?
shouldn't he be fouling?
shouldn't we be fouling?
shouldn't you be fouling?
shouldn't they be fouling? 	shouldn't I have fouled?
shouldn't you have fouled?
shouldn't he have fouled?
shouldn't we have fouled?
shouldn't you have fouled?
shouldn't they have fouled? 	shouldn't I have been fouling?
shouldn't you have been fouling?
shouldn't he have been fouling?
shouldn't we have been fouling?
shouldn't you have been fouling?
shouldn't they have been fouling?