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