I could calender you could calender she could calender we could calender you could calender they could calender
Forma con V-ing
I could be calendering you could be calendering she could be calendering we could be calendering you could be calendering they could be calendering
Perfecto
I could have calendered you could have calendered she could have calendered we could have calendered you could have calendered they could have calendered
Perfecto con V-ing
I could have been calendering you could have been calendering she could have been calendering we could have been calendering you could have been calendering they could have been calendering
Negación
Forma simple
I could not calender you could not calender she could not calender we could not calender you could not calender they could not calender
Forma con V-ing
I could not be calendering you could not be calendering she could not be calendering we could not be calendering you could not be calendering they could not be calendering
Perfecto
I could not have calendered you could not have calendered she could not have calendered we could not have calendered you could not have calendered they could not have calendered
Perfecto con V-ing
I could not have been calendering you could not have been calendering she could not have been calendering we could not have been calendering you could not have been calendering they could not have been calendering
Forma interrogativa
Forma simple
could I calender? could you calender? could she calender? could we calender? could you calender? could they calender?
Forma con V-ing
could I be calendering? could you be calendering? could she be calendering? could we be calendering? could you be calendering? could they be calendering?
Perfecto
could I have calendered? could you have calendered? could she have calendered? could we have calendered? could you have calendered? could they have calendered?
Perfecto con V-ing
could I have been calendering? could you have been calendering? could she have been calendering? could we have been calendering? could you have been calendering? could they have been calendering?
Forma interro-negativa
Forma simple
could I not calender? could you not calender? could she not calender? could we not calender? could you not calender? could they not calender?
Forma con V-ing
could I not be calendering? could you not be calendering? could she not be calendering? could we not be calendering? could you not be calendering? could they not be calendering?
Perfecto
could I not have calendered? could you not have calendered? could she not have calendered? could we not have calendered? could you not have calendered? could they not have calendered?
Perfecto con V-ing
could I not have been calendering? could you not have been calendering? could she not have been calendering? could we not have been calendering? could you not have been calendering? could they not have been calendering?