I could trade you could trade she could trade we could trade you could trade they could trade
Forma con V-ing
I could be trading you could be trading she could be trading we could be trading you could be trading they could be trading
Perfecto
I could have traded you could have traded she could have traded we could have traded you could have traded they could have traded
Perfecto con V-ing
I could have been trading you could have been trading she could have been trading we could have been trading you could have been trading they could have been trading
Negación
Forma simple
I couldn't trade you couldn't trade she couldn't trade we couldn't trade you couldn't trade they couldn't trade
Forma con V-ing
I couldn't be trading you couldn't be trading she couldn't be trading we couldn't be trading you couldn't be trading they couldn't be trading
Perfecto
I couldn't have traded you couldn't have traded she couldn't have traded we couldn't have traded you couldn't have traded they couldn't have traded
Perfecto con V-ing
I couldn't have been trading you couldn't have been trading she couldn't have been trading we couldn't have been trading you couldn't have been trading they couldn't have been trading
Forma interrogativa
Forma simple
could I trade? could you trade? could she trade? could we trade? could you trade? could they trade?
Forma con V-ing
could I be trading? could you be trading? could she be trading? could we be trading? could you be trading? could they be trading?
Perfecto
could I have traded? could you have traded? could she have traded? could we have traded? could you have traded? could they have traded?
Perfecto con V-ing
could I have been trading? could you have been trading? could she have been trading? could we have been trading? could you have been trading? could they have been trading?
Forma interro-negativa
Forma simple
couldn't I trade? couldn't you trade? couldn't she trade? couldn't we trade? couldn't you trade? couldn't they trade?
Forma con V-ing
couldn't I be trading? couldn't you be trading? couldn't she be trading? couldn't we be trading? couldn't you be trading? couldn't they be trading?
Perfecto
couldn't I have traded? couldn't you have traded? couldn't she have traded? couldn't we have traded? couldn't you have traded? couldn't they have traded?
Perfecto con V-ing
couldn't I have been trading? couldn't you have been trading? couldn't she have been trading? couldn't we have been trading? couldn't you have been trading? couldn't they have been trading?