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