can retract
Verbo regular: retract - retracted- retracted

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can retract
you can retract
he can retract
we can retract
you can retract
they can retract 	I can be retracting
you can be retracting
he can be retracting
we can be retracting
you can be retracting
they can be retracting	I can have retracted
you can have retracted
he can have retracted
we can have retracted
you can have retracted
they can have retracted	I can have been retracting
you can have been retracting
he can have been retracting
we can have been retracting
you can have been retracting
they can have been retracting	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I cannot retract
you cannot retract
he cannot retract
we cannot retract
you cannot retract
they cannot retract 	I cannot be retracting
you cannot be retracting
he cannot be retracting
we cannot be retracting
you cannot be retracting
they cannot be retracting	I cannot have retracted
you cannot have retracted
he cannot have retracted
we cannot have retracted
you cannot have retracted
they cannot have retracted	I cannot have been retracting
you cannot have been retracting
he cannot have been retracting
we cannot have been retracting
you cannot have been retracting
they cannot have been retracting	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I retract?
can you retract?
can he retract?
can we retract?
can you retract?
can they retract? 	can I be retracting?
can you be retracting?
can he be retracting?
can we be retracting?
can you be retracting?
can they be retracting? 	can I have retracted?
can you have retracted?
can he have retracted?
can we have retracted?
can you have retracted?
can they have retracted? 	can I have been retracting?
can you have been retracting?
can he have been retracting?
can we have been retracting?
can you have been retracting?
can they have been retracting? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I not retract?
can you not retract?
can he not retract?
can we not retract?
can you not retract?
can they not retract? 	can I not be retracting?
can you not be retracting?
can he not be retracting?
can we not be retracting?
can you not be retracting?
can they not be retracting? 	can I not have retracted?
can you not have retracted?
can he not have retracted?
can we not have retracted?
can you not have retracted?
can they not have retracted? 	can I not have been retracting?
can you not have been retracting?
can he not have been retracting?
can we not have been retracting?
can you not have been retracting?
can they not have been retracting?