may precool
Regular verb: precool - precooled- precooled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may precool
you may precool
he may precool
we may precool
you may precool
they may precool 	I may be precooling
you may be precooling
he may be precooling
we may be precooling
you may be precooling
they may be precooling	I may have precooled
you may have precooled
he 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
he 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 mayn't precool
you mayn't precool
he mayn't precool
we mayn't precool
you mayn't precool
they mayn't precool 	I mayn't be precooling
you mayn't be precooling
he mayn't be precooling
we mayn't be precooling
you mayn't be precooling
they mayn't be precooling	I mayn't have precooled
you mayn't have precooled
he mayn't have precooled
we mayn't have precooled
you mayn't have precooled
they mayn't have precooled	I mayn't have been precooling
you mayn't have been precooling
he mayn't have been precooling
we mayn't have been precooling
you mayn't have been precooling
they mayn't have been precooling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I precool?
may you precool?
may he precool?
may we precool?
may you precool?
may they precool? 	may I be precooling?
may you be precooling?
may he be precooling?
may we be precooling?
may you be precooling?
may they be precooling? 	may I have precooled?
may you have precooled?
may he 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 he 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 	
mayn't I precool?
mayn't you precool?
mayn't he precool?
mayn't we precool?
mayn't you precool?
mayn't they precool? 	mayn't I be precooling?
mayn't you be precooling?
mayn't he be precooling?
mayn't we be precooling?
mayn't you be precooling?
mayn't they be precooling? 	mayn't I have precooled?
mayn't you have precooled?
mayn't he have precooled?
mayn't we have precooled?
mayn't you have precooled?
mayn't they have precooled? 	mayn't I have been precooling?
mayn't you have been precooling?
mayn't he have been precooling?
mayn't we have been precooling?
mayn't you have been precooling?
mayn't they have been precooling?