should board
Verbo regular: board - boarded- boarded

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I should board
you should board
she should board
we should board
you should board
they should board 	I should be boarding
you should be boarding
she should be boarding
we should be boarding
you should be boarding
they should be boarding	I should have boarded
you should have boarded
she should have boarded
we should have boarded
you should have boarded
they should have boarded	I should have been boarding
you should have been boarding
she should have been boarding
we should have been boarding
you should have been boarding
they should have been boarding	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I should not board
you should not board
she should not board
we should not board
you should not board
they should not board 	I should not be boarding
you should not be boarding
she should not be boarding
we should not be boarding
you should not be boarding
they should not be boarding	I should not have boarded
you should not have boarded
she should not have boarded
we should not have boarded
you should not have boarded
they should not have boarded	I should not have been boarding
you should not have been boarding
she should not have been boarding
we should not have been boarding
you should not have been boarding
they should not have been boarding	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I board?
should you board?
should she board?
should we board?
should you board?
should they board? 	should I be boarding?
should you be boarding?
should she be boarding?
should we be boarding?
should you be boarding?
should they be boarding? 	should I have boarded?
should you have boarded?
should she have boarded?
should we have boarded?
should you have boarded?
should they have boarded? 	should I have been boarding?
should you have been boarding?
should she have been boarding?
should we have been boarding?
should you have been boarding?
should they have been boarding? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I not board?
should you not board?
should she not board?
should we not board?
should you not board?
should they not board? 	should I not be boarding?
should you not be boarding?
should she not be boarding?
should we not be boarding?
should you not be boarding?
should they not be boarding? 	should I not have boarded?
should you not have boarded?
should she not have boarded?
should we not have boarded?
should you not have boarded?
should they not have boarded? 	should I not have been boarding?
should you not have been boarding?
should she not have been boarding?
should we not have been boarding?
should you not have been boarding?
should they not have been boarding?