may prefer
Regular verb: prefer - preferred- preferred

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may prefer
you may prefer
she may prefer
we may prefer
you may prefer
they may prefer 	I may be preferring
you may be preferring
she may be preferring
we may be preferring
you may be preferring
they may be preferring	I may have preferred
you may have preferred
she may have preferred
we may have preferred
you may have preferred
they may have preferred	I may have been preferring
you may have been preferring
she may have been preferring
we may have been preferring
you may have been preferring
they may have been preferring	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may not prefer
you may not prefer
she may not prefer
we may not prefer
you may not prefer
they may not prefer 	I may not be preferring
you may not be preferring
she may not be preferring
we may not be preferring
you may not be preferring
they may not be preferring	I may not have preferred
you may not have preferred
she may not have preferred
we may not have preferred
you may not have preferred
they may not have preferred	I may not have been preferring
you may not have been preferring
she may not have been preferring
we may not have been preferring
you may not have been preferring
they may not have been preferring	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I prefer?
may you prefer?
may she prefer?
may we prefer?
may you prefer?
may they prefer? 	may I be preferring?
may you be preferring?
may she be preferring?
may we be preferring?
may you be preferring?
may they be preferring? 	may I have preferred?
may you have preferred?
may she have preferred?
may we have preferred?
may you have preferred?
may they have preferred? 	may I have been preferring?
may you have been preferring?
may she have been preferring?
may we have been preferring?
may you have been preferring?
may they have been preferring? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I not prefer?
may you not prefer?
may she not prefer?
may we not prefer?
may you not prefer?
may they not prefer? 	may I not be preferring?
may you not be preferring?
may she not be preferring?
may we not be preferring?
may you not be preferring?
may they not be preferring? 	may I not have preferred?
may you not have preferred?
may she not have preferred?
may we not have preferred?
may you not have preferred?
may they not have preferred? 	may I not have been preferring?
may you not have been preferring?
may she not have been preferring?
may we not have been preferring?
may you not have been preferring?
may they not have been preferring?