can perturb
Verbo regular: perturb - perturbed- perturbed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can perturb
you can perturb
he can perturb
we can perturb
you can perturb
they can perturb 	I can be perturbing
you can be perturbing
he can be perturbing
we can be perturbing
you can be perturbing
they can be perturbing	I can have perturbed
you can have perturbed
he can have perturbed
we can have perturbed
you can have perturbed
they can have perturbed	I can have been perturbing
you can have been perturbing
he can have been perturbing
we can have been perturbing
you can have been perturbing
they can have been perturbing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I cannot perturb
you cannot perturb
he cannot perturb
we cannot perturb
you cannot perturb
they cannot perturb 	I cannot be perturbing
you cannot be perturbing
he cannot be perturbing
we cannot be perturbing
you cannot be perturbing
they cannot be perturbing	I cannot have perturbed
you cannot have perturbed
he cannot have perturbed
we cannot have perturbed
you cannot have perturbed
they cannot have perturbed	I cannot have been perturbing
you cannot have been perturbing
he cannot have been perturbing
we cannot have been perturbing
you cannot have been perturbing
they cannot have been perturbing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I perturb?
can you perturb?
can he perturb?
can we perturb?
can you perturb?
can they perturb? 	can I be perturbing?
can you be perturbing?
can he be perturbing?
can we be perturbing?
can you be perturbing?
can they be perturbing? 	can I have perturbed?
can you have perturbed?
can he have perturbed?
can we have perturbed?
can you have perturbed?
can they have perturbed? 	can I have been perturbing?
can you have been perturbing?
can he have been perturbing?
can we have been perturbing?
can you have been perturbing?
can they have been perturbing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I not perturb?
can you not perturb?
can he not perturb?
can we not perturb?
can you not perturb?
can they not perturb? 	can I not be perturbing?
can you not be perturbing?
can he not be perturbing?
can we not be perturbing?
can you not be perturbing?
can they not be perturbing? 	can I not have perturbed?
can you not have perturbed?
can he not have perturbed?
can we not have perturbed?
can you not have perturbed?
can they not have perturbed? 	can I not have been perturbing?
can you not have been perturbing?
can he not have been perturbing?
can we not have been perturbing?
can you not have been perturbing?
can they not have been perturbing?