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