should tower
Regular verb: tower - towered- towered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd tower
you'd tower
she'd tower
we'd tower
you'd tower
they'd tower 	I'd be towering
you'd be towering
she'd be towering
we'd be towering
you'd be towering
they'd be towering	I should've towered
you should've towered
she should've towered
we should've towered
you should've towered
they should've towered	I should've been towering
you should've been towering
she should've been towering
we should've been towering
you should've been towering
they should've been towering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't tower
you shouldn't tower
she shouldn't tower
we shouldn't tower
you shouldn't tower
they shouldn't tower 	I shouldn't be towering
you shouldn't be towering
she shouldn't be towering
we shouldn't be towering
you shouldn't be towering
they shouldn't be towering	I shouldn't have towered
you shouldn't have towered
she shouldn't have towered
we shouldn't have towered
you shouldn't have towered
they shouldn't have towered	I shouldn't have been towering
you shouldn't have been towering
she shouldn't have been towering
we shouldn't have been towering
you shouldn't have been towering
they shouldn't have been towering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I tower?
should you tower?
should she tower?
should we tower?
should you tower?
should they tower? 	should I be towering?
should you be towering?
should she be towering?
should we be towering?
should you be towering?
should they be towering? 	should I have towered?
should you have towered?
should she have towered?
should we have towered?
should you have towered?
should they have towered? 	should I have been towering?
should you have been towering?
should she have been towering?
should we have been towering?
should you have been towering?
should they have been towering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I tower?
shouldn't you tower?
shouldn't she tower?
shouldn't we tower?
shouldn't you tower?
shouldn't they tower? 	shouldn't I be towering?
shouldn't you be towering?
shouldn't she be towering?
shouldn't we be towering?
shouldn't you be towering?
shouldn't they be towering? 	shouldn't I have towered?
shouldn't you have towered?
shouldn't she have towered?
shouldn't we have towered?
shouldn't you have towered?
shouldn't they have towered? 	shouldn't I have been towering?
shouldn't you have been towering?
shouldn't she have been towering?
shouldn't we have been towering?
shouldn't you have been towering?
shouldn't they have been towering?