should tow
Regular verb: tow - towed- towed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd tow
you'd tow
she'd tow
we'd tow
you'd tow
they'd tow 	I'd be towing
you'd be towing
she'd be towing
we'd be towing
you'd be towing
they'd be towing	I should've towed
you should've towed
she should've towed
we should've towed
you should've towed
they should've towed	I should've been towing
you should've been towing
she should've been towing
we should've been towing
you should've been towing
they should've been towing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't tow
you shouldn't tow
she shouldn't tow
we shouldn't tow
you shouldn't tow
they shouldn't tow 	I shouldn't be towing
you shouldn't be towing
she shouldn't be towing
we shouldn't be towing
you shouldn't be towing
they shouldn't be towing	I shouldn't have towed
you shouldn't have towed
she shouldn't have towed
we shouldn't have towed
you shouldn't have towed
they shouldn't have towed	I shouldn't have been towing
you shouldn't have been towing
she shouldn't have been towing
we shouldn't have been towing
you shouldn't have been towing
they shouldn't have been towing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I tow?
should you tow?
should she tow?
should we tow?
should you tow?
should they tow? 	should I be towing?
should you be towing?
should she be towing?
should we be towing?
should you be towing?
should they be towing? 	should I have towed?
should you have towed?
should she have towed?
should we have towed?
should you have towed?
should they have towed? 	should I have been towing?
should you have been towing?
should she have been towing?
should we have been towing?
should you have been towing?
should they have been towing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I tow?
shouldn't you tow?
shouldn't she tow?
shouldn't we tow?
shouldn't you tow?
shouldn't they tow? 	shouldn't I be towing?
shouldn't you be towing?
shouldn't she be towing?
shouldn't we be towing?
shouldn't you be towing?
shouldn't they be towing? 	shouldn't I have towed?
shouldn't you have towed?
shouldn't she have towed?
shouldn't we have towed?
shouldn't you have towed?
shouldn't they have towed? 	shouldn't I have been towing?
shouldn't you have been towing?
shouldn't she have been towing?
shouldn't we have been towing?
shouldn't you have been towing?
shouldn't they have been towing?