may precool
Regular verb: precool - precooled- precooled

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

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may not precool
you may not precool
she may not precool
we may not precool
you may not precool
they may not precool 	I may not be precooling
you may not be precooling
she may not be precooling
we may not be precooling
you may not be precooling
they may not be precooling	I may not have precooled
you may not have precooled
she may not have precooled
we may not have precooled
you may not have precooled
they may not have precooled	I may not have been precooling
you may not have been precooling
she may not have been precooling
we may not have been precooling
you may not have been precooling
they may not have been precooling	

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

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