could shuck
Verbo regular: shuck - shucked- shucked

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could shuck
you could shuck
he could shuck
we could shuck
you could shuck
they could shuck 	I could be shucking
you could be shucking
he could be shucking
we could be shucking
you could be shucking
they could be shucking	I could have shucked
you could have shucked
he could have shucked
we could have shucked
you could have shucked
they could have shucked	I could have been shucking
you could have been shucking
he could have been shucking
we could have been shucking
you could have been shucking
they could have been shucking	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not shuck
you could not shuck
he could not shuck
we could not shuck
you could not shuck
they could not shuck 	I could not be shucking
you could not be shucking
he could not be shucking
we could not be shucking
you could not be shucking
they could not be shucking	I could not have shucked
you could not have shucked
he could not have shucked
we could not have shucked
you could not have shucked
they could not have shucked	I could not have been shucking
you could not have been shucking
he could not have been shucking
we could not have been shucking
you could not have been shucking
they could not have been shucking	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I shuck?
could you shuck?
could he shuck?
could we shuck?
could you shuck?
could they shuck? 	could I be shucking?
could you be shucking?
could he be shucking?
could we be shucking?
could you be shucking?
could they be shucking? 	could I have shucked?
could you have shucked?
could he have shucked?
could we have shucked?
could you have shucked?
could they have shucked? 	could I have been shucking?
could you have been shucking?
could he have been shucking?
could we have been shucking?
could you have been shucking?
could they have been shucking? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not shuck?
could you not shuck?
could he not shuck?
could we not shuck?
could you not shuck?
could they not shuck? 	could I not be shucking?
could you not be shucking?
could he not be shucking?
could we not be shucking?
could you not be shucking?
could they not be shucking? 	could I not have shucked?
could you not have shucked?
could he not have shucked?
could we not have shucked?
could you not have shucked?
could they not have shucked? 	could I not have been shucking?
could you not have been shucking?
could he not have been shucking?
could we not have been shucking?
could you not have been shucking?
could they not have been shucking?