may filter
Verbo regular: filter - filtered- filtered

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I may filter
you may filter
she may filter
we may filter
you may filter
they may filter 	I may be filtering
you may be filtering
she may be filtering
we may be filtering
you may be filtering
they may be filtering	I may have filtered
you may have filtered
she may have filtered
we may have filtered
you may have filtered
they may have filtered	I may have been filtering
you may have been filtering
she may have been filtering
we may have been filtering
you may have been filtering
they may have been filtering	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I may not filter
you may not filter
she may not filter
we may not filter
you may not filter
they may not filter 	I may not be filtering
you may not be filtering
she may not be filtering
we may not be filtering
you may not be filtering
they may not be filtering	I may not have filtered
you may not have filtered
she may not have filtered
we may not have filtered
you may not have filtered
they may not have filtered	I may not have been filtering
you may not have been filtering
she may not have been filtering
we may not have been filtering
you may not have been filtering
they may not have been filtering	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
may I filter?
may you filter?
may she filter?
may we filter?
may you filter?
may they filter? 	may I be filtering?
may you be filtering?
may she be filtering?
may we be filtering?
may you be filtering?
may they be filtering? 	may I have filtered?
may you have filtered?
may she have filtered?
may we have filtered?
may you have filtered?
may they have filtered? 	may I have been filtering?
may you have been filtering?
may she have been filtering?
may we have been filtering?
may you have been filtering?
may they have been filtering? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
may I not filter?
may you not filter?
may she not filter?
may we not filter?
may you not filter?
may they not filter? 	may I not be filtering?
may you not be filtering?
may she not be filtering?
may we not be filtering?
may you not be filtering?
may they not be filtering? 	may I not have filtered?
may you not have filtered?
may she not have filtered?
may we not have filtered?
may you not have filtered?
may they not have filtered? 	may I not have been filtering?
may you not have been filtering?
may she not have been filtering?
may we not have been filtering?
may you not have been filtering?
may they not have been filtering?