can extinguish
Verbo regular: extinguish - extinguished- extinguished

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can extinguish
you can extinguish
he can extinguish
we can extinguish
you can extinguish
they can extinguish 	I can be extinguishing
you can be extinguishing
he can be extinguishing
we can be extinguishing
you can be extinguishing
they can be extinguishing	I can have extinguished
you can have extinguished
he can have extinguished
we can have extinguished
you can have extinguished
they can have extinguished	I can have been extinguishing
you can have been extinguishing
he can have been extinguishing
we can have been extinguishing
you can have been extinguishing
they can have been extinguishing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I cannot extinguish
you cannot extinguish
he cannot extinguish
we cannot extinguish
you cannot extinguish
they cannot extinguish 	I cannot be extinguishing
you cannot be extinguishing
he cannot be extinguishing
we cannot be extinguishing
you cannot be extinguishing
they cannot be extinguishing	I cannot have extinguished
you cannot have extinguished
he cannot have extinguished
we cannot have extinguished
you cannot have extinguished
they cannot have extinguished	I cannot have been extinguishing
you cannot have been extinguishing
he cannot have been extinguishing
we cannot have been extinguishing
you cannot have been extinguishing
they cannot have been extinguishing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I extinguish?
can you extinguish?
can he extinguish?
can we extinguish?
can you extinguish?
can they extinguish? 	can I be extinguishing?
can you be extinguishing?
can he be extinguishing?
can we be extinguishing?
can you be extinguishing?
can they be extinguishing? 	can I have extinguished?
can you have extinguished?
can he have extinguished?
can we have extinguished?
can you have extinguished?
can they have extinguished? 	can I have been extinguishing?
can you have been extinguishing?
can he have been extinguishing?
can we have been extinguishing?
can you have been extinguishing?
can they have been extinguishing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I not extinguish?
can you not extinguish?
can he not extinguish?
can we not extinguish?
can you not extinguish?
can they not extinguish? 	can I not be extinguishing?
can you not be extinguishing?
can he not be extinguishing?
can we not be extinguishing?
can you not be extinguishing?
can they not be extinguishing? 	can I not have extinguished?
can you not have extinguished?
can he not have extinguished?
can we not have extinguished?
can you not have extinguished?
can they not have extinguished? 	can I not have been extinguishing?
can you not have been extinguishing?
can he not have been extinguishing?
can we not have been extinguishing?
can you not have been extinguishing?
can they not have been extinguishing?