could stick
Verbo irregular: stick - stuck- stuck

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could stick
you could stick
he could stick
we could stick
you could stick
they could stick 	I could be sticking
you could be sticking
he could be sticking
we could be sticking
you could be sticking
they could be sticking	I could have stuck
you could have stuck
he could have stuck
we could have stuck
you could have stuck
they could have stuck	I could have been sticking
you could have been sticking
he could have been sticking
we could have been sticking
you could have been sticking
they could have been sticking	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not stick
you could not stick
he could not stick
we could not stick
you could not stick
they could not stick 	I could not be sticking
you could not be sticking
he could not be sticking
we could not be sticking
you could not be sticking
they could not be sticking	I could not have stuck
you could not have stuck
he could not have stuck
we could not have stuck
you could not have stuck
they could not have stuck	I could not have been sticking
you could not have been sticking
he could not have been sticking
we could not have been sticking
you could not have been sticking
they could not have been sticking	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I stick?
could you stick?
could he stick?
could we stick?
could you stick?
could they stick? 	could I be sticking?
could you be sticking?
could he be sticking?
could we be sticking?
could you be sticking?
could they be sticking? 	could I have stuck?
could you have stuck?
could he have stuck?
could we have stuck?
could you have stuck?
could they have stuck? 	could I have been sticking?
could you have been sticking?
could he have been sticking?
could we have been sticking?
could you have been sticking?
could they have been sticking? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not stick?
could you not stick?
could he not stick?
could we not stick?
could you not stick?
could they not stick? 	could I not be sticking?
could you not be sticking?
could he not be sticking?
could we not be sticking?
could you not be sticking?
could they not be sticking? 	could I not have stuck?
could you not have stuck?
could he not have stuck?
could we not have stuck?
could you not have stuck?
could they not have stuck? 	could I not have been sticking?
could you not have been sticking?
could he not have been sticking?
could we not have been sticking?
could you not have been sticking?
could they not have been sticking?