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