could umpire
Verbo regular: umpire - umpired- umpired

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could umpire
you could umpire
he could umpire
we could umpire
you could umpire
they could umpire 	I could be umpiring
you could be umpiring
he could be umpiring
we could be umpiring
you could be umpiring
they could be umpiring	I could have umpired
you could have umpired
he could have umpired
we could have umpired
you could have umpired
they could have umpired	I could have been umpiring
you could have been umpiring
he could have been umpiring
we could have been umpiring
you could have been umpiring
they could have been umpiring	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not umpire
you could not umpire
he could not umpire
we could not umpire
you could not umpire
they could not umpire 	I could not be umpiring
you could not be umpiring
he could not be umpiring
we could not be umpiring
you could not be umpiring
they could not be umpiring	I could not have umpired
you could not have umpired
he could not have umpired
we could not have umpired
you could not have umpired
they could not have umpired	I could not have been umpiring
you could not have been umpiring
he could not have been umpiring
we could not have been umpiring
you could not have been umpiring
they could not have been umpiring	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I umpire?
could you umpire?
could he umpire?
could we umpire?
could you umpire?
could they umpire? 	could I be umpiring?
could you be umpiring?
could he be umpiring?
could we be umpiring?
could you be umpiring?
could they be umpiring? 	could I have umpired?
could you have umpired?
could he have umpired?
could we have umpired?
could you have umpired?
could they have umpired? 	could I have been umpiring?
could you have been umpiring?
could he have been umpiring?
could we have been umpiring?
could you have been umpiring?
could they have been umpiring? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not umpire?
could you not umpire?
could he not umpire?
could we not umpire?
could you not umpire?
could they not umpire? 	could I not be umpiring?
could you not be umpiring?
could he not be umpiring?
could we not be umpiring?
could you not be umpiring?
could they not be umpiring? 	could I not have umpired?
could you not have umpired?
could he not have umpired?
could we not have umpired?
could you not have umpired?
could they not have umpired? 	could I not have been umpiring?
could you not have been umpiring?
could he not have been umpiring?
could we not have been umpiring?
could you not have been umpiring?
could they not have been umpiring?