may shack
Verbo regular: shack - shacked- shacked

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I may shack
you may shack
he may shack
we may shack
you may shack
they may shack 	I may be shacking
you may be shacking
he may be shacking
we may be shacking
you may be shacking
they may be shacking	I may have shacked
you may have shacked
he may have shacked
we may have shacked
you may have shacked
they may have shacked	I may have been shacking
you may have been shacking
he may have been shacking
we may have been shacking
you may have been shacking
they may have been shacking	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I may not shack
you may not shack
he may not shack
we may not shack
you may not shack
they may not shack 	I may not be shacking
you may not be shacking
he may not be shacking
we may not be shacking
you may not be shacking
they may not be shacking	I may not have shacked
you may not have shacked
he may not have shacked
we may not have shacked
you may not have shacked
they may not have shacked	I may not have been shacking
you may not have been shacking
he may not have been shacking
we may not have been shacking
you may not have been shacking
they may not have been shacking	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
may I shack?
may you shack?
may he shack?
may we shack?
may you shack?
may they shack? 	may I be shacking?
may you be shacking?
may he be shacking?
may we be shacking?
may you be shacking?
may they be shacking? 	may I have shacked?
may you have shacked?
may he have shacked?
may we have shacked?
may you have shacked?
may they have shacked? 	may I have been shacking?
may you have been shacking?
may he have been shacking?
may we have been shacking?
may you have been shacking?
may they have been shacking? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
may I not shack?
may you not shack?
may he not shack?
may we not shack?
may you not shack?
may they not shack? 	may I not be shacking?
may you not be shacking?
may he not be shacking?
may we not be shacking?
may you not be shacking?
may they not be shacking? 	may I not have shacked?
may you not have shacked?
may he not have shacked?
may we not have shacked?
may you not have shacked?
may they not have shacked? 	may I not have been shacking?
may you not have been shacking?
may he not have been shacking?
may we not have been shacking?
may you not have been shacking?
may they not have been shacking?