should underrun
Verbo irregular: underrun - underran- underrun

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I should underrun
you should underrun
she should underrun
we should underrun
you should underrun
they should underrun 	I should be underruning
you should be underruning
she should be underruning
we should be underruning
you should be underruning
they should be underruning	I should have underrun
you should have underrun
she should have underrun
we should have underrun
you should have underrun
they should have underrun	I should have been underruning
you should have been underruning
she should have been underruning
we should have been underruning
you should have been underruning
they should have been underruning	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I should not underrun
you should not underrun
she should not underrun
we should not underrun
you should not underrun
they should not underrun 	I should not be underruning
you should not be underruning
she should not be underruning
we should not be underruning
you should not be underruning
they should not be underruning	I should not have underrun
you should not have underrun
she should not have underrun
we should not have underrun
you should not have underrun
they should not have underrun	I should not have been underruning
you should not have been underruning
she should not have been underruning
we should not have been underruning
you should not have been underruning
they should not have been underruning	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
should I underrun?
should you underrun?
should she underrun?
should we underrun?
should you underrun?
should they underrun? 	should I be underruning?
should you be underruning?
should she be underruning?
should we be underruning?
should you be underruning?
should they be underruning? 	should I have underrun?
should you have underrun?
should she have underrun?
should we have underrun?
should you have underrun?
should they have underrun? 	should I have been underruning?
should you have been underruning?
should she have been underruning?
should we have been underruning?
should you have been underruning?
should they have been underruning? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
should I not underrun?
should you not underrun?
should she not underrun?
should we not underrun?
should you not underrun?
should they not underrun? 	should I not be underruning?
should you not be underruning?
should she not be underruning?
should we not be underruning?
should you not be underruning?
should they not be underruning? 	should I not have underrun?
should you not have underrun?
should she not have underrun?
should we not have underrun?
should you not have underrun?
should they not have underrun? 	should I not have been underruning?
should you not have been underruning?
should she not have been underruning?
should we not have been underruning?
should you not have been underruning?
should they not have been underruning?