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