can fib
Verbo regular: fib - fibbed- fibbed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can fib
you can fib
he can fib
we can fib
you can fib
they can fib 	I can be fibbing
you can be fibbing
he can be fibbing
we can be fibbing
you can be fibbing
they can be fibbing	I can have fibbed
you can have fibbed
he can have fibbed
we can have fibbed
you can have fibbed
they can have fibbed	I can have been fibbing
you can have been fibbing
he can have been fibbing
we can have been fibbing
you can have been fibbing
they can have been fibbing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can't fib
you can't fib
he can't fib
we can't fib
you can't fib
they can't fib 	I can't be fibbing
you can't be fibbing
he can't be fibbing
we can't be fibbing
you can't be fibbing
they can't be fibbing	I can't have fibbed
you can't have fibbed
he can't have fibbed
we can't have fibbed
you can't have fibbed
they can't have fibbed	I can't have been fibbing
you can't have been fibbing
he can't have been fibbing
we can't have been fibbing
you can't have been fibbing
they can't have been fibbing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I fib?
can you fib?
can he fib?
can we fib?
can you fib?
can they fib? 	can I be fibbing?
can you be fibbing?
can he be fibbing?
can we be fibbing?
can you be fibbing?
can they be fibbing? 	can I have fibbed?
can you have fibbed?
can he have fibbed?
can we have fibbed?
can you have fibbed?
can they have fibbed? 	can I have been fibbing?
can you have been fibbing?
can he have been fibbing?
can we have been fibbing?
can you have been fibbing?
can they have been fibbing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can't I fib?
can't you fib?
can't he fib?
can't we fib?
can't you fib?
can't they fib? 	can't I be fibbing?
can't you be fibbing?
can't he be fibbing?
can't we be fibbing?
can't you be fibbing?
can't they be fibbing? 	can't I have fibbed?
can't you have fibbed?
can't he have fibbed?
can't we have fibbed?
can't you have fibbed?
can't they have fibbed? 	can't I have been fibbing?
can't you have been fibbing?
can't he have been fibbing?
can't we have been fibbing?
can't you have been fibbing?
can't they have been fibbing?