can precool
Regular verb: precool - precooled- precooled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can precool
you can precool
he can precool
we can precool
you can precool
they can precool 	I can be precooling
you can be precooling
he can be precooling
we can be precooling
you can be precooling
they can be precooling	I can have precooled
you can have precooled
he can have precooled
we can have precooled
you can have precooled
they can have precooled	I can have been precooling
you can have been precooling
he can have been precooling
we can have been precooling
you can have been precooling
they can have been precooling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot precool
you cannot precool
he cannot precool
we cannot precool
you cannot precool
they cannot precool 	I cannot be precooling
you cannot be precooling
he cannot be precooling
we cannot be precooling
you cannot be precooling
they cannot be precooling	I cannot have precooled
you cannot have precooled
he cannot have precooled
we cannot have precooled
you cannot have precooled
they cannot have precooled	I cannot have been precooling
you cannot have been precooling
he cannot have been precooling
we cannot have been precooling
you cannot have been precooling
they cannot have been precooling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I precool?
can you precool?
can he precool?
can we precool?
can you precool?
can they precool? 	can I be precooling?
can you be precooling?
can he be precooling?
can we be precooling?
can you be precooling?
can they be precooling? 	can I have precooled?
can you have precooled?
can he have precooled?
can we have precooled?
can you have precooled?
can they have precooled? 	can I have been precooling?
can you have been precooling?
can he have been precooling?
can we have been precooling?
can you have been precooling?
can they have been precooling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not precool?
can you not precool?
can he not precool?
can we not precool?
can you not precool?
can they not precool? 	can I not be precooling?
can you not be precooling?
can he not be precooling?
can we not be precooling?
can you not be precooling?
can they not be precooling? 	can I not have precooled?
can you not have precooled?
can he not have precooled?
can we not have precooled?
can you not have precooled?
can they not have precooled? 	can I not have been precooling?
can you not have been precooling?
can he not have been precooling?
can we not have been precooling?
can you not have been precooling?
can they not have been precooling?