may retrofit
Irregular verb: retrofit - retrofit- retrofit

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may retrofit
you may retrofit
he may retrofit
we may retrofit
you may retrofit
they may retrofit 	I may be retrofiting
you may be retrofiting
he may be retrofiting
we may be retrofiting
you may be retrofiting
they may be retrofiting	I may have retrofit
you may have retrofit
he may have retrofit
we may have retrofit
you may have retrofit
they may have retrofit	I may have been retrofiting
you may have been retrofiting
he may have been retrofiting
we may have been retrofiting
you may have been retrofiting
they may have been retrofiting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may not retrofit
you may not retrofit
he may not retrofit
we may not retrofit
you may not retrofit
they may not retrofit 	I may not be retrofiting
you may not be retrofiting
he may not be retrofiting
we may not be retrofiting
you may not be retrofiting
they may not be retrofiting	I may not have retrofit
you may not have retrofit
he may not have retrofit
we may not have retrofit
you may not have retrofit
they may not have retrofit	I may not have been retrofiting
you may not have been retrofiting
he may not have been retrofiting
we may not have been retrofiting
you may not have been retrofiting
they may not have been retrofiting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I retrofit?
may you retrofit?
may he retrofit?
may we retrofit?
may you retrofit?
may they retrofit? 	may I be retrofiting?
may you be retrofiting?
may he be retrofiting?
may we be retrofiting?
may you be retrofiting?
may they be retrofiting? 	may I have retrofit?
may you have retrofit?
may he have retrofit?
may we have retrofit?
may you have retrofit?
may they have retrofit? 	may I have been retrofiting?
may you have been retrofiting?
may he have been retrofiting?
may we have been retrofiting?
may you have been retrofiting?
may they have been retrofiting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I not retrofit?
may you not retrofit?
may he not retrofit?
may we not retrofit?
may you not retrofit?
may they not retrofit? 	may I not be retrofiting?
may you not be retrofiting?
may he not be retrofiting?
may we not be retrofiting?
may you not be retrofiting?
may they not be retrofiting? 	may I not have retrofit?
may you not have retrofit?
may he not have retrofit?
may we not have retrofit?
may you not have retrofit?
may they not have retrofit? 	may I not have been retrofiting?
may you not have been retrofiting?
may he not have been retrofiting?
may we not have been retrofiting?
may you not have been retrofiting?
may they not have been retrofiting?