I could revolve you could revolve he could revolve we could revolve you could revolve they could revolve
Forma con V-ing
I could be revolving you could be revolving he could be revolving we could be revolving you could be revolving they could be revolving
Perfecto
I could have revolved you could have revolved he could have revolved we could have revolved you could have revolved they could have revolved
Perfecto con V-ing
I could have been revolving you could have been revolving he could have been revolving we could have been revolving you could have been revolving they could have been revolving
Negación
Forma simple
I couldn't revolve you couldn't revolve he couldn't revolve we couldn't revolve you couldn't revolve they couldn't revolve
Forma con V-ing
I couldn't be revolving you couldn't be revolving he couldn't be revolving we couldn't be revolving you couldn't be revolving they couldn't be revolving
Perfecto
I couldn't have revolved you couldn't have revolved he couldn't have revolved we couldn't have revolved you couldn't have revolved they couldn't have revolved
Perfecto con V-ing
I couldn't have been revolving you couldn't have been revolving he couldn't have been revolving we couldn't have been revolving you couldn't have been revolving they couldn't have been revolving
Forma interrogativa
Forma simple
could I revolve? could you revolve? could he revolve? could we revolve? could you revolve? could they revolve?
Forma con V-ing
could I be revolving? could you be revolving? could he be revolving? could we be revolving? could you be revolving? could they be revolving?
Perfecto
could I have revolved? could you have revolved? could he have revolved? could we have revolved? could you have revolved? could they have revolved?
Perfecto con V-ing
could I have been revolving? could you have been revolving? could he have been revolving? could we have been revolving? could you have been revolving? could they have been revolving?
Forma interro-negativa
Forma simple
couldn't I revolve? couldn't you revolve? couldn't he revolve? couldn't we revolve? couldn't you revolve? couldn't they revolve?
Forma con V-ing
couldn't I be revolving? couldn't you be revolving? couldn't he be revolving? couldn't we be revolving? couldn't you be revolving? couldn't they be revolving?
Perfecto
couldn't I have revolved? couldn't you have revolved? couldn't he have revolved? couldn't we have revolved? couldn't you have revolved? couldn't they have revolved?
Perfecto con V-ing
couldn't I have been revolving? couldn't you have been revolving? couldn't he have been revolving? couldn't we have been revolving? couldn't you have been revolving? couldn't they have been revolving?