could pilfer
Verbo regular: pilfer - pilfered- pilfered

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could pilfer
you could pilfer
he could pilfer
we could pilfer
you could pilfer
they could pilfer 	I could be pilfering
you could be pilfering
he could be pilfering
we could be pilfering
you could be pilfering
they could be pilfering	I could have pilfered
you could have pilfered
he could have pilfered
we could have pilfered
you could have pilfered
they could have pilfered	I could have been pilfering
you could have been pilfering
he could have been pilfering
we could have been pilfering
you could have been pilfering
they could have been pilfering	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not pilfer
you could not pilfer
he could not pilfer
we could not pilfer
you could not pilfer
they could not pilfer 	I could not be pilfering
you could not be pilfering
he could not be pilfering
we could not be pilfering
you could not be pilfering
they could not be pilfering	I could not have pilfered
you could not have pilfered
he could not have pilfered
we could not have pilfered
you could not have pilfered
they could not have pilfered	I could not have been pilfering
you could not have been pilfering
he could not have been pilfering
we could not have been pilfering
you could not have been pilfering
they could not have been pilfering	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I pilfer?
could you pilfer?
could he pilfer?
could we pilfer?
could you pilfer?
could they pilfer? 	could I be pilfering?
could you be pilfering?
could he be pilfering?
could we be pilfering?
could you be pilfering?
could they be pilfering? 	could I have pilfered?
could you have pilfered?
could he have pilfered?
could we have pilfered?
could you have pilfered?
could they have pilfered? 	could I have been pilfering?
could you have been pilfering?
could he have been pilfering?
could we have been pilfering?
could you have been pilfering?
could they have been pilfering? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not pilfer?
could you not pilfer?
could he not pilfer?
could we not pilfer?
could you not pilfer?
could they not pilfer? 	could I not be pilfering?
could you not be pilfering?
could he not be pilfering?
could we not be pilfering?
could you not be pilfering?
could they not be pilfering? 	could I not have pilfered?
could you not have pilfered?
could he not have pilfered?
could we not have pilfered?
could you not have pilfered?
could they not have pilfered? 	could I not have been pilfering?
could you not have been pilfering?
could he not have been pilfering?
could we not have been pilfering?
could you not have been pilfering?
could they not have been pilfering?