may unfasten
Verbo regular: unfasten - unfastened- unfastened

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I may unfasten
you may unfasten
he may unfasten
we may unfasten
you may unfasten
they may unfasten 	I may be unfastening
you may be unfastening
he may be unfastening
we may be unfastening
you may be unfastening
they may be unfastening	I may have unfastened
you may have unfastened
he may have unfastened
we may have unfastened
you may have unfastened
they may have unfastened	I may have been unfastening
you may have been unfastening
he may have been unfastening
we may have been unfastening
you may have been unfastening
they may have been unfastening	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I may not unfasten
you may not unfasten
he may not unfasten
we may not unfasten
you may not unfasten
they may not unfasten 	I may not be unfastening
you may not be unfastening
he may not be unfastening
we may not be unfastening
you may not be unfastening
they may not be unfastening	I may not have unfastened
you may not have unfastened
he may not have unfastened
we may not have unfastened
you may not have unfastened
they may not have unfastened	I may not have been unfastening
you may not have been unfastening
he may not have been unfastening
we may not have been unfastening
you may not have been unfastening
they may not have been unfastening	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
may I unfasten?
may you unfasten?
may he unfasten?
may we unfasten?
may you unfasten?
may they unfasten? 	may I be unfastening?
may you be unfastening?
may he be unfastening?
may we be unfastening?
may you be unfastening?
may they be unfastening? 	may I have unfastened?
may you have unfastened?
may he have unfastened?
may we have unfastened?
may you have unfastened?
may they have unfastened? 	may I have been unfastening?
may you have been unfastening?
may he have been unfastening?
may we have been unfastening?
may you have been unfastening?
may they have been unfastening? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
may I not unfasten?
may you not unfasten?
may he not unfasten?
may we not unfasten?
may you not unfasten?
may they not unfasten? 	may I not be unfastening?
may you not be unfastening?
may he not be unfastening?
may we not be unfastening?
may you not be unfastening?
may they not be unfastening? 	may I not have unfastened?
may you not have unfastened?
may he not have unfastened?
may we not have unfastened?
may you not have unfastened?
may they not have unfastened? 	may I not have been unfastening?
may you not have been unfastening?
may he not have been unfastening?
may we not have been unfastening?
may you not have been unfastening?
may they not have been unfastening?