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