may curb
Regular verb: curb - curbed- curbed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may curb
you may curb
he may curb
we may curb
you may curb
they may curb 	I may be curbing
you may be curbing
he may be curbing
we may be curbing
you may be curbing
they may be curbing	I may have curbed
you may have curbed
he may have curbed
we may have curbed
you may have curbed
they may have curbed	I may have been curbing
you may have been curbing
he may have been curbing
we may have been curbing
you may have been curbing
they may have been curbing	

Negation 	
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I may not curb
you may not curb
he may not curb
we may not curb
you may not curb
they may not curb 	I may not be curbing
you may not be curbing
he may not be curbing
we may not be curbing
you may not be curbing
they may not be curbing	I may not have curbed
you may not have curbed
he may not have curbed
we may not have curbed
you may not have curbed
they may not have curbed	I may not have been curbing
you may not have been curbing
he may not have been curbing
we may not have been curbing
you may not have been curbing
they may not have been curbing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I curb?
may you curb?
may he curb?
may we curb?
may you curb?
may they curb? 	may I be curbing?
may you be curbing?
may he be curbing?
may we be curbing?
may you be curbing?
may they be curbing? 	may I have curbed?
may you have curbed?
may he have curbed?
may we have curbed?
may you have curbed?
may they have curbed? 	may I have been curbing?
may you have been curbing?
may he have been curbing?
may we have been curbing?
may you have been curbing?
may they have been curbing? 	

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