could perch
Verbo regular: perch - perched- perched

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could perch
you could perch
he could perch
we could perch
you could perch
they could perch 	I could be perching
you could be perching
he could be perching
we could be perching
you could be perching
they could be perching	I could have perched
you could have perched
he could have perched
we could have perched
you could have perched
they could have perched	I could have been perching
you could have been perching
he could have been perching
we could have been perching
you could have been perching
they could have been perching	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not perch
you could not perch
he could not perch
we could not perch
you could not perch
they could not perch 	I could not be perching
you could not be perching
he could not be perching
we could not be perching
you could not be perching
they could not be perching	I could not have perched
you could not have perched
he could not have perched
we could not have perched
you could not have perched
they could not have perched	I could not have been perching
you could not have been perching
he could not have been perching
we could not have been perching
you could not have been perching
they could not have been perching	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I perch?
could you perch?
could he perch?
could we perch?
could you perch?
could they perch? 	could I be perching?
could you be perching?
could he be perching?
could we be perching?
could you be perching?
could they be perching? 	could I have perched?
could you have perched?
could he have perched?
could we have perched?
could you have perched?
could they have perched? 	could I have been perching?
could you have been perching?
could he have been perching?
could we have been perching?
could you have been perching?
could they have been perching? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not perch?
could you not perch?
could he not perch?
could we not perch?
could you not perch?
could they not perch? 	could I not be perching?
could you not be perching?
could he not be perching?
could we not be perching?
could you not be perching?
could they not be perching? 	could I not have perched?
could you not have perched?
could he not have perched?
could we not have perched?
could you not have perched?
could they not have perched? 	could I not have been perching?
could you not have been perching?
could he not have been perching?
could we not have been perching?
could you not have been perching?
could they not have been perching?