may occur
Verbo regular: occur - occurred- occurred

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I may occur
you may occur
he may occur
we may occur
you may occur
they may occur 	I may be occurring
you may be occurring
he may be occurring
we may be occurring
you may be occurring
they may be occurring	I may have occurred
you may have occurred
he may have occurred
we may have occurred
you may have occurred
they may have occurred	I may have been occurring
you may have been occurring
he may have been occurring
we may have been occurring
you may have been occurring
they may have been occurring	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I may not occur
you may not occur
he may not occur
we may not occur
you may not occur
they may not occur 	I may not be occurring
you may not be occurring
he may not be occurring
we may not be occurring
you may not be occurring
they may not be occurring	I may not have occurred
you may not have occurred
he may not have occurred
we may not have occurred
you may not have occurred
they may not have occurred	I may not have been occurring
you may not have been occurring
he may not have been occurring
we may not have been occurring
you may not have been occurring
they may not have been occurring	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
may I occur?
may you occur?
may he occur?
may we occur?
may you occur?
may they occur? 	may I be occurring?
may you be occurring?
may he be occurring?
may we be occurring?
may you be occurring?
may they be occurring? 	may I have occurred?
may you have occurred?
may he have occurred?
may we have occurred?
may you have occurred?
may they have occurred? 	may I have been occurring?
may you have been occurring?
may he have been occurring?
may we have been occurring?
may you have been occurring?
may they have been occurring? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
may I not occur?
may you not occur?
may he not occur?
may we not occur?
may you not occur?
may they not occur? 	may I not be occurring?
may you not be occurring?
may he not be occurring?
may we not be occurring?
may you not be occurring?
may they not be occurring? 	may I not have occurred?
may you not have occurred?
may he not have occurred?
may we not have occurred?
may you not have occurred?
may they not have occurred? 	may I not have been occurring?
may you not have been occurring?
may he not have been occurring?
may we not have been occurring?
may you not have been occurring?
may they not have been occurring?