could officiate
Verbo regular: officiate - officiated- officiated

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could officiate
you could officiate
he could officiate
we could officiate
you could officiate
they could officiate 	I could be officiating
you could be officiating
he could be officiating
we could be officiating
you could be officiating
they could be officiating	I could have officiated
you could have officiated
he could have officiated
we could have officiated
you could have officiated
they could have officiated	I could have been officiating
you could have been officiating
he could have been officiating
we could have been officiating
you could have been officiating
they could have been officiating	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not officiate
you could not officiate
he could not officiate
we could not officiate
you could not officiate
they could not officiate 	I could not be officiating
you could not be officiating
he could not be officiating
we could not be officiating
you could not be officiating
they could not be officiating	I could not have officiated
you could not have officiated
he could not have officiated
we could not have officiated
you could not have officiated
they could not have officiated	I could not have been officiating
you could not have been officiating
he could not have been officiating
we could not have been officiating
you could not have been officiating
they could not have been officiating	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I officiate?
could you officiate?
could he officiate?
could we officiate?
could you officiate?
could they officiate? 	could I be officiating?
could you be officiating?
could he be officiating?
could we be officiating?
could you be officiating?
could they be officiating? 	could I have officiated?
could you have officiated?
could he have officiated?
could we have officiated?
could you have officiated?
could they have officiated? 	could I have been officiating?
could you have been officiating?
could he have been officiating?
could we have been officiating?
could you have been officiating?
could they have been officiating? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not officiate?
could you not officiate?
could he not officiate?
could we not officiate?
could you not officiate?
could they not officiate? 	could I not be officiating?
could you not be officiating?
could he not be officiating?
could we not be officiating?
could you not be officiating?
could they not be officiating? 	could I not have officiated?
could you not have officiated?
could he not have officiated?
could we not have officiated?
could you not have officiated?
could they not have officiated? 	could I not have been officiating?
could you not have been officiating?
could he not have been officiating?
could we not have been officiating?
could you not have been officiating?
could they not have been officiating?