should tether
Regular verb: tether - tethered- tethered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should tether
you should tether
she should tether
we should tether
you should tether
they should tether 	I should be tethering
you should be tethering
she should be tethering
we should be tethering
you should be tethering
they should be tethering	I should have tethered
you should have tethered
she should have tethered
we should have tethered
you should have tethered
they should have tethered	I should have been tethering
you should have been tethering
she should have been tethering
we should have been tethering
you should have been tethering
they should have been tethering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should not tether
you should not tether
she should not tether
we should not tether
you should not tether
they should not tether 	I should not be tethering
you should not be tethering
she should not be tethering
we should not be tethering
you should not be tethering
they should not be tethering	I should not have tethered
you should not have tethered
she should not have tethered
we should not have tethered
you should not have tethered
they should not have tethered	I should not have been tethering
you should not have been tethering
she should not have been tethering
we should not have been tethering
you should not have been tethering
they should not have been tethering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I tether?
should you tether?
should she tether?
should we tether?
should you tether?
should they tether? 	should I be tethering?
should you be tethering?
should she be tethering?
should we be tethering?
should you be tethering?
should they be tethering? 	should I have tethered?
should you have tethered?
should she have tethered?
should we have tethered?
should you have tethered?
should they have tethered? 	should I have been tethering?
should you have been tethering?
should she have been tethering?
should we have been tethering?
should you have been tethering?
should they have been tethering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I not tether?
should you not tether?
should she not tether?
should we not tether?
should you not tether?
should they not tether? 	should I not be tethering?
should you not be tethering?
should she not be tethering?
should we not be tethering?
should you not be tethering?
should they not be tethering? 	should I not have tethered?
should you not have tethered?
should she not have tethered?
should we not have tethered?
should you not have tethered?
should they not have tethered? 	should I not have been tethering?
should you not have been tethering?
should she not have been tethering?
should we not have been tethering?
should you not have been tethering?
should they not have been tethering?