could precess
Verbo regular: precess - precessed- precessed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could precess
you could precess
he could precess
we could precess
you could precess
they could precess 	I could be precessing
you could be precessing
he could be precessing
we could be precessing
you could be precessing
they could be precessing	I could have precessed
you could have precessed
he could have precessed
we could have precessed
you could have precessed
they could have precessed	I could have been precessing
you could have been precessing
he could have been precessing
we could have been precessing
you could have been precessing
they could have been precessing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not precess
you could not precess
he could not precess
we could not precess
you could not precess
they could not precess 	I could not be precessing
you could not be precessing
he could not be precessing
we could not be precessing
you could not be precessing
they could not be precessing	I could not have precessed
you could not have precessed
he could not have precessed
we could not have precessed
you could not have precessed
they could not have precessed	I could not have been precessing
you could not have been precessing
he could not have been precessing
we could not have been precessing
you could not have been precessing
they could not have been precessing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I precess?
could you precess?
could he precess?
could we precess?
could you precess?
could they precess? 	could I be precessing?
could you be precessing?
could he be precessing?
could we be precessing?
could you be precessing?
could they be precessing? 	could I have precessed?
could you have precessed?
could he have precessed?
could we have precessed?
could you have precessed?
could they have precessed? 	could I have been precessing?
could you have been precessing?
could he have been precessing?
could we have been precessing?
could you have been precessing?
could they have been precessing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not precess?
could you not precess?
could he not precess?
could we not precess?
could you not precess?
could they not precess? 	could I not be precessing?
could you not be precessing?
could he not be precessing?
could we not be precessing?
could you not be precessing?
could they not be precessing? 	could I not have precessed?
could you not have precessed?
could he not have precessed?
could we not have precessed?
could you not have precessed?
could they not have precessed? 	could I not have been precessing?
could you not have been precessing?
could he not have been precessing?
could we not have been precessing?
could you not have been precessing?
could they not have been precessing?