could clabber
Verbo regular: clabber - clabbered- clabbered

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could clabber
you could clabber
he could clabber
we could clabber
you could clabber
they could clabber 	I could be clabbering
you could be clabbering
he could be clabbering
we could be clabbering
you could be clabbering
they could be clabbering	I could have clabbered
you could have clabbered
he could have clabbered
we could have clabbered
you could have clabbered
they could have clabbered	I could have been clabbering
you could have been clabbering
he could have been clabbering
we could have been clabbering
you could have been clabbering
they could have been clabbering	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not clabber
you could not clabber
he could not clabber
we could not clabber
you could not clabber
they could not clabber 	I could not be clabbering
you could not be clabbering
he could not be clabbering
we could not be clabbering
you could not be clabbering
they could not be clabbering	I could not have clabbered
you could not have clabbered
he could not have clabbered
we could not have clabbered
you could not have clabbered
they could not have clabbered	I could not have been clabbering
you could not have been clabbering
he could not have been clabbering
we could not have been clabbering
you could not have been clabbering
they could not have been clabbering	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I clabber?
could you clabber?
could he clabber?
could we clabber?
could you clabber?
could they clabber? 	could I be clabbering?
could you be clabbering?
could he be clabbering?
could we be clabbering?
could you be clabbering?
could they be clabbering? 	could I have clabbered?
could you have clabbered?
could he have clabbered?
could we have clabbered?
could you have clabbered?
could they have clabbered? 	could I have been clabbering?
could you have been clabbering?
could he have been clabbering?
could we have been clabbering?
could you have been clabbering?
could they have been clabbering? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not clabber?
could you not clabber?
could he not clabber?
could we not clabber?
could you not clabber?
could they not clabber? 	could I not be clabbering?
could you not be clabbering?
could he not be clabbering?
could we not be clabbering?
could you not be clabbering?
could they not be clabbering? 	could I not have clabbered?
could you not have clabbered?
could he not have clabbered?
could we not have clabbered?
could you not have clabbered?
could they not have clabbered? 	could I not have been clabbering?
could you not have been clabbering?
could he not have been clabbering?
could we not have been clabbering?
could you not have been clabbering?
could they not have been clabbering?