could precool
Verbo regular: precool - precooled- precooled

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could precool
you could precool
he could precool
we could precool
you could precool
they could precool 	I could be precooling
you could be precooling
he could be precooling
we could be precooling
you could be precooling
they could be precooling	I could have precooled
you could have precooled
he could have precooled
we could have precooled
you could have precooled
they could have precooled	I could have been precooling
you could have been precooling
he could have been precooling
we could have been precooling
you could have been precooling
they could have been precooling	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't precool
you couldn't precool
he couldn't precool
we couldn't precool
you couldn't precool
they couldn't precool 	I couldn't be precooling
you couldn't be precooling
he couldn't be precooling
we couldn't be precooling
you couldn't be precooling
they couldn't be precooling	I couldn't have precooled
you couldn't have precooled
he couldn't have precooled
we couldn't have precooled
you couldn't have precooled
they couldn't have precooled	I couldn't have been precooling
you couldn't have been precooling
he couldn't have been precooling
we couldn't have been precooling
you couldn't have been precooling
they couldn't have been precooling	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I precool?
could you precool?
could he precool?
could we precool?
could you precool?
could they precool? 	could I be precooling?
could you be precooling?
could he be precooling?
could we be precooling?
could you be precooling?
could they be precooling? 	could I have precooled?
could you have precooled?
could he have precooled?
could we have precooled?
could you have precooled?
could they have precooled? 	could I have been precooling?
could you have been precooling?
could he have been precooling?
could we have been precooling?
could you have been precooling?
could they have been precooling? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I precool?
couldn't you precool?
couldn't he precool?
couldn't we precool?
couldn't you precool?
couldn't they precool? 	couldn't I be precooling?
couldn't you be precooling?
couldn't he be precooling?
couldn't we be precooling?
couldn't you be precooling?
couldn't they be precooling? 	couldn't I have precooled?
couldn't you have precooled?
couldn't he have precooled?
couldn't we have precooled?
couldn't you have precooled?
couldn't they have precooled? 	couldn't I have been precooling?
couldn't you have been precooling?
couldn't he have been precooling?
couldn't we have been precooling?
couldn't you have been precooling?
couldn't they have been precooling?