I could stick you could stick he could stick we could stick you could stick they could stick
Forma con V-ing
I could be sticking you could be sticking he could be sticking we could be sticking you could be sticking they could be sticking
Perfecto
I could have stuck you could have stuck he could have stuck we could have stuck you could have stuck they could have stuck
Perfecto con V-ing
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
I couldn't stick you couldn't stick he couldn't stick we couldn't stick you couldn't stick they couldn't stick
Forma con V-ing
I couldn't be sticking you couldn't be sticking he couldn't be sticking we couldn't be sticking you couldn't be sticking they couldn't be sticking
Perfecto
I couldn't have stuck you couldn't have stuck he couldn't have stuck we couldn't have stuck you couldn't have stuck they couldn't have stuck
Perfecto con V-ing
I couldn't have been sticking you couldn't have been sticking he couldn't have been sticking we couldn't have been sticking you couldn't have been sticking they couldn't have been sticking
Forma interrogativa
Forma simple
could I stick? could you stick? could he stick? could we stick? could you stick? could they stick?
Forma con V-ing
could I be sticking? could you be sticking? could he be sticking? could we be sticking? could you be sticking? could they be sticking?
Perfecto
could I have stuck? could you have stuck? could he have stuck? could we have stuck? could you have stuck? could they have stuck?
Perfecto con V-ing
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
couldn't I stick? couldn't you stick? couldn't he stick? couldn't we stick? couldn't you stick? couldn't they stick?
Forma con V-ing
couldn't I be sticking? couldn't you be sticking? couldn't he be sticking? couldn't we be sticking? couldn't you be sticking? couldn't they be sticking?
Perfecto
couldn't I have stuck? couldn't you have stuck? couldn't he have stuck? couldn't we have stuck? couldn't you have stuck? couldn't they have stuck?
Perfecto con V-ing
couldn't I have been sticking? couldn't you have been sticking? couldn't he have been sticking? couldn't we have been sticking? couldn't you have been sticking? couldn't they have been sticking?