should lag
Verbo regular: lag - lagged- lagged

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I should lag
you should lag
she should lag
we should lag
you should lag
they should lag 	I should be lagging
you should be lagging
she should be lagging
we should be lagging
you should be lagging
they should be lagging	I should have lagged
you should have lagged
she should have lagged
we should have lagged
you should have lagged
they should have lagged	I should have been lagging
you should have been lagging
she should have been lagging
we should have been lagging
you should have been lagging
they should have been lagging	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I should not lag
you should not lag
she should not lag
we should not lag
you should not lag
they should not lag 	I should not be lagging
you should not be lagging
she should not be lagging
we should not be lagging
you should not be lagging
they should not be lagging	I should not have lagged
you should not have lagged
she should not have lagged
we should not have lagged
you should not have lagged
they should not have lagged	I should not have been lagging
you should not have been lagging
she should not have been lagging
we should not have been lagging
you should not have been lagging
they should not have been lagging	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I lag?
should you lag?
should she lag?
should we lag?
should you lag?
should they lag? 	should I be lagging?
should you be lagging?
should she be lagging?
should we be lagging?
should you be lagging?
should they be lagging? 	should I have lagged?
should you have lagged?
should she have lagged?
should we have lagged?
should you have lagged?
should they have lagged? 	should I have been lagging?
should you have been lagging?
should she have been lagging?
should we have been lagging?
should you have been lagging?
should they have been lagging? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I not lag?
should you not lag?
should she not lag?
should we not lag?
should you not lag?
should they not lag? 	should I not be lagging?
should you not be lagging?
should she not be lagging?
should we not be lagging?
should you not be lagging?
should they not be lagging? 	should I not have lagged?
should you not have lagged?
should she not have lagged?
should we not have lagged?
should you not have lagged?
should they not have lagged? 	should I not have been lagging?
should you not have been lagging?
should she not have been lagging?
should we not have been lagging?
should you not have been lagging?
should they not have been lagging?