should back
Verbo regolare: back - backed- backed

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I should back
you should back
she should back
we should back
you should back
they should back 	I should be backing
you should be backing
she should be backing
we should be backing
you should be backing
they should be backing	I should have backed
you should have backed
she should have backed
we should have backed
you should have backed
they should have backed	I should have been backing
you should have been backing
she should have been backing
we should have been backing
you should have been backing
they should have been backing	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I should not back
you should not back
she should not back
we should not back
you should not back
they should not back 	I should not be backing
you should not be backing
she should not be backing
we should not be backing
you should not be backing
they should not be backing	I should not have backed
you should not have backed
she should not have backed
we should not have backed
you should not have backed
they should not have backed	I should not have been backing
you should not have been backing
she should not have been backing
we should not have been backing
you should not have been backing
they should not have been backing	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
should I back?
should you back?
should she back?
should we back?
should you back?
should they back? 	should I be backing?
should you be backing?
should she be backing?
should we be backing?
should you be backing?
should they be backing? 	should I have backed?
should you have backed?
should she have backed?
should we have backed?
should you have backed?
should they have backed? 	should I have been backing?
should you have been backing?
should she have been backing?
should we have been backing?
should you have been backing?
should they have been backing? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
should I not back?
should you not back?
should she not back?
should we not back?
should you not back?
should they not back? 	should I not be backing?
should you not be backing?
should she not be backing?
should we not be backing?
should you not be backing?
should they not be backing? 	should I not have backed?
should you not have backed?
should she not have backed?
should we not have backed?
should you not have backed?
should they not have backed? 	should I not have been backing?
should you not have been backing?
should she not have been backing?
should we not have been backing?
should you not have been backing?
should they not have been backing?