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