can crackle
Verbo regular: crackle - crackled- crackled

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can crackle
you can crackle
he can crackle
we can crackle
you can crackle
they can crackle 	I can be crackling
you can be crackling
he can be crackling
we can be crackling
you can be crackling
they can be crackling	I can have crackled
you can have crackled
he can have crackled
we can have crackled
you can have crackled
they can have crackled	I can have been crackling
you can have been crackling
he can have been crackling
we can have been crackling
you can have been crackling
they can have been crackling	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I cannot crackle
you cannot crackle
he cannot crackle
we cannot crackle
you cannot crackle
they cannot crackle 	I cannot be crackling
you cannot be crackling
he cannot be crackling
we cannot be crackling
you cannot be crackling
they cannot be crackling	I cannot have crackled
you cannot have crackled
he cannot have crackled
we cannot have crackled
you cannot have crackled
they cannot have crackled	I cannot have been crackling
you cannot have been crackling
he cannot have been crackling
we cannot have been crackling
you cannot have been crackling
they cannot have been crackling	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I crackle?
can you crackle?
can he crackle?
can we crackle?
can you crackle?
can they crackle? 	can I be crackling?
can you be crackling?
can he be crackling?
can we be crackling?
can you be crackling?
can they be crackling? 	can I have crackled?
can you have crackled?
can he have crackled?
can we have crackled?
can you have crackled?
can they have crackled? 	can I have been crackling?
can you have been crackling?
can he have been crackling?
can we have been crackling?
can you have been crackling?
can they have been crackling? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I not crackle?
can you not crackle?
can he not crackle?
can we not crackle?
can you not crackle?
can they not crackle? 	can I not be crackling?
can you not be crackling?
can he not be crackling?
can we not be crackling?
can you not be crackling?
can they not be crackling? 	can I not have crackled?
can you not have crackled?
can he not have crackled?
can we not have crackled?
can you not have crackled?
can they not have crackled? 	can I not have been crackling?
can you not have been crackling?
can he not have been crackling?
can we not have been crackling?
can you not have been crackling?
can they not have been crackling?