should lag
Verbo regular: lag - lagged- lagged

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I should lag
you should lag
he should lag
we should lag
you should lag
they should lag 	I should be lagging
you should be lagging
he should be lagging
we should be lagging
you should be lagging
they should be lagging	I should have lagged
you should have lagged
he 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
he should have been lagging
we should have been lagging
you should have been lagging
they should have been lagging	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I should not lag
you should not lag
he 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
he 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
he 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
he 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 com V-ing 	Perfeito 	Perfeito com V-ing 	
should I lag?
should you lag?
should he lag?
should we lag?
should you lag?
should they lag? 	should I be lagging?
should you be lagging?
should he be lagging?
should we be lagging?
should you be lagging?
should they be lagging? 	should I have lagged?
should you have lagged?
should he 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 he have been lagging?
should we have been lagging?
should you have been lagging?
should they have been lagging? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
should I not lag?
should you not lag?
should he 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 he 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 he 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 he not have been lagging?
should we not have been lagging?
should you not have been lagging?
should they not have been lagging?