may lengthen
Verbo regular: lengthen - lengthened- lengthened

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I may lengthen
you may lengthen
he may lengthen
we may lengthen
you may lengthen
they may lengthen 	I may be lengthening
you may be lengthening
he may be lengthening
we may be lengthening
you may be lengthening
they may be lengthening	I may have lengthened
you may have lengthened
he may have lengthened
we may have lengthened
you may have lengthened
they may have lengthened	I may have been lengthening
you may have been lengthening
he may have been lengthening
we may have been lengthening
you may have been lengthening
they may have been lengthening	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I may not lengthen
you may not lengthen
he may not lengthen
we may not lengthen
you may not lengthen
they may not lengthen 	I may not be lengthening
you may not be lengthening
he may not be lengthening
we may not be lengthening
you may not be lengthening
they may not be lengthening	I may not have lengthened
you may not have lengthened
he may not have lengthened
we may not have lengthened
you may not have lengthened
they may not have lengthened	I may not have been lengthening
you may not have been lengthening
he may not have been lengthening
we may not have been lengthening
you may not have been lengthening
they may not have been lengthening	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
may I lengthen?
may you lengthen?
may he lengthen?
may we lengthen?
may you lengthen?
may they lengthen? 	may I be lengthening?
may you be lengthening?
may he be lengthening?
may we be lengthening?
may you be lengthening?
may they be lengthening? 	may I have lengthened?
may you have lengthened?
may he have lengthened?
may we have lengthened?
may you have lengthened?
may they have lengthened? 	may I have been lengthening?
may you have been lengthening?
may he have been lengthening?
may we have been lengthening?
may you have been lengthening?
may they have been lengthening? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
may I not lengthen?
may you not lengthen?
may he not lengthen?
may we not lengthen?
may you not lengthen?
may they not lengthen? 	may I not be lengthening?
may you not be lengthening?
may he not be lengthening?
may we not be lengthening?
may you not be lengthening?
may they not be lengthening? 	may I not have lengthened?
may you not have lengthened?
may he not have lengthened?
may we not have lengthened?
may you not have lengthened?
may they not have lengthened? 	may I not have been lengthening?
may you not have been lengthening?
may he not have been lengthening?
may we not have been lengthening?
may you not have been lengthening?
may they not have been lengthening?