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