may precede
Regular verb: precede - preceded- preceded

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may precede
you may precede
she may precede
we may precede
you may precede
they may precede 	I may be preceding
you may be preceding
she may be preceding
we may be preceding
you may be preceding
they may be preceding	I may have preceded
you may have preceded
she may have preceded
we may have preceded
you may have preceded
they may have preceded	I may have been preceding
you may have been preceding
she may have been preceding
we may have been preceding
you may have been preceding
they may have been preceding	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may not precede
you may not precede
she may not precede
we may not precede
you may not precede
they may not precede 	I may not be preceding
you may not be preceding
she may not be preceding
we may not be preceding
you may not be preceding
they may not be preceding	I may not have preceded
you may not have preceded
she may not have preceded
we may not have preceded
you may not have preceded
they may not have preceded	I may not have been preceding
you may not have been preceding
she may not have been preceding
we may not have been preceding
you may not have been preceding
they may not have been preceding	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I precede?
may you precede?
may she precede?
may we precede?
may you precede?
may they precede? 	may I be preceding?
may you be preceding?
may she be preceding?
may we be preceding?
may you be preceding?
may they be preceding? 	may I have preceded?
may you have preceded?
may she have preceded?
may we have preceded?
may you have preceded?
may they have preceded? 	may I have been preceding?
may you have been preceding?
may she have been preceding?
may we have been preceding?
may you have been preceding?
may they have been preceding? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I not precede?
may you not precede?
may she not precede?
may we not precede?
may you not precede?
may they not precede? 	may I not be preceding?
may you not be preceding?
may she not be preceding?
may we not be preceding?
may you not be preceding?
may they not be preceding? 	may I not have preceded?
may you not have preceded?
may she not have preceded?
may we not have preceded?
may you not have preceded?
may they not have preceded? 	may I not have been preceding?
may you not have been preceding?
may she not have been preceding?
may we not have been preceding?
may you not have been preceding?
may they not have been preceding?