may precalculate
Regular verb: precalculate - precalculated- precalculated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may precalculate
you may precalculate
he may precalculate
we may precalculate
you may precalculate
they may precalculate 	I may be precalculating
you may be precalculating
he may be precalculating
we may be precalculating
you may be precalculating
they may be precalculating	I may have precalculated
you may have precalculated
he may have precalculated
we may have precalculated
you may have precalculated
they may have precalculated	I may have been precalculating
you may have been precalculating
he may have been precalculating
we may have been precalculating
you may have been precalculating
they may have been precalculating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't precalculate
you mayn't precalculate
he mayn't precalculate
we mayn't precalculate
you mayn't precalculate
they mayn't precalculate 	I mayn't be precalculating
you mayn't be precalculating
he mayn't be precalculating
we mayn't be precalculating
you mayn't be precalculating
they mayn't be precalculating	I mayn't have precalculated
you mayn't have precalculated
he mayn't have precalculated
we mayn't have precalculated
you mayn't have precalculated
they mayn't have precalculated	I mayn't have been precalculating
you mayn't have been precalculating
he mayn't have been precalculating
we mayn't have been precalculating
you mayn't have been precalculating
they mayn't have been precalculating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I precalculate?
may you precalculate?
may he precalculate?
may we precalculate?
may you precalculate?
may they precalculate? 	may I be precalculating?
may you be precalculating?
may he be precalculating?
may we be precalculating?
may you be precalculating?
may they be precalculating? 	may I have precalculated?
may you have precalculated?
may he have precalculated?
may we have precalculated?
may you have precalculated?
may they have precalculated? 	may I have been precalculating?
may you have been precalculating?
may he have been precalculating?
may we have been precalculating?
may you have been precalculating?
may they have been precalculating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I precalculate?
mayn't you precalculate?
mayn't he precalculate?
mayn't we precalculate?
mayn't you precalculate?
mayn't they precalculate? 	mayn't I be precalculating?
mayn't you be precalculating?
mayn't he be precalculating?
mayn't we be precalculating?
mayn't you be precalculating?
mayn't they be precalculating? 	mayn't I have precalculated?
mayn't you have precalculated?
mayn't he have precalculated?
mayn't we have precalculated?
mayn't you have precalculated?
mayn't they have precalculated? 	mayn't I have been precalculating?
mayn't you have been precalculating?
mayn't he have been precalculating?
mayn't we have been precalculating?
mayn't you have been precalculating?
mayn't they have been precalculating?