should tough
Verbo regular: tough - toughed- toughed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I should tough
you should tough
she should tough
we should tough
you should tough
they should tough 	I should be toughing
you should be toughing
she should be toughing
we should be toughing
you should be toughing
they should be toughing	I should have toughed
you should have toughed
she should have toughed
we should have toughed
you should have toughed
they should have toughed	I should have been toughing
you should have been toughing
she should have been toughing
we should have been toughing
you should have been toughing
they should have been toughing	

Negación 	
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I should not tough
you should not tough
she should not tough
we should not tough
you should not tough
they should not tough 	I should not be toughing
you should not be toughing
she should not be toughing
we should not be toughing
you should not be toughing
they should not be toughing	I should not have toughed
you should not have toughed
she should not have toughed
we should not have toughed
you should not have toughed
they should not have toughed	I should not have been toughing
you should not have been toughing
she should not have been toughing
we should not have been toughing
you should not have been toughing
they should not have been toughing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I tough?
should you tough?
should she tough?
should we tough?
should you tough?
should they tough? 	should I be toughing?
should you be toughing?
should she be toughing?
should we be toughing?
should you be toughing?
should they be toughing? 	should I have toughed?
should you have toughed?
should she have toughed?
should we have toughed?
should you have toughed?
should they have toughed? 	should I have been toughing?
should you have been toughing?
should she have been toughing?
should we have been toughing?
should you have been toughing?
should they have been toughing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I not tough?
should you not tough?
should she not tough?
should we not tough?
should you not tough?
should they not tough? 	should I not be toughing?
should you not be toughing?
should she not be toughing?
should we not be toughing?
should you not be toughing?
should they not be toughing? 	should I not have toughed?
should you not have toughed?
should she not have toughed?
should we not have toughed?
should you not have toughed?
should they not have toughed? 	should I not have been toughing?
should you not have been toughing?
should she not have been toughing?
should we not have been toughing?
should you not have been toughing?
should they not have been toughing?