I could puncture you could puncture he could puncture we could puncture you could puncture they could puncture
Forma com V-ing
I could be puncturing you could be puncturing he could be puncturing we could be puncturing you could be puncturing they could be puncturing
Perfeito
I could have punctured you could have punctured he could have punctured we could have punctured you could have punctured they could have punctured
Perfeito com V-ing
I could have been puncturing you could have been puncturing he could have been puncturing we could have been puncturing you could have been puncturing they could have been puncturing
Negação
Forma simple
I couldn't puncture you couldn't puncture he couldn't puncture we couldn't puncture you couldn't puncture they couldn't puncture
Forma com V-ing
I couldn't be puncturing you couldn't be puncturing he couldn't be puncturing we couldn't be puncturing you couldn't be puncturing they couldn't be puncturing
Perfeito
I couldn't have punctured you couldn't have punctured he couldn't have punctured we couldn't have punctured you couldn't have punctured they couldn't have punctured
Perfeito com V-ing
I couldn't have been puncturing you couldn't have been puncturing he couldn't have been puncturing we couldn't have been puncturing you couldn't have been puncturing they couldn't have been puncturing
Forma interrogativa
Forma simple
could I puncture? could you puncture? could he puncture? could we puncture? could you puncture? could they puncture?
Forma com V-ing
could I be puncturing? could you be puncturing? could he be puncturing? could we be puncturing? could you be puncturing? could they be puncturing?
Perfeito
could I have punctured? could you have punctured? could he have punctured? could we have punctured? could you have punctured? could they have punctured?
Perfeito com V-ing
could I have been puncturing? could you have been puncturing? could he have been puncturing? could we have been puncturing? could you have been puncturing? could they have been puncturing?
Forma interro-Negação
Forma simple
couldn't I puncture? couldn't you puncture? couldn't he puncture? couldn't we puncture? couldn't you puncture? couldn't they puncture?
Forma com V-ing
couldn't I be puncturing? couldn't you be puncturing? couldn't he be puncturing? couldn't we be puncturing? couldn't you be puncturing? couldn't they be puncturing?
Perfeito
couldn't I have punctured? couldn't you have punctured? couldn't he have punctured? couldn't we have punctured? couldn't you have punctured? couldn't they have punctured?
Perfeito com V-ing
couldn't I have been puncturing? couldn't you have been puncturing? couldn't he have been puncturing? couldn't we have been puncturing? couldn't you have been puncturing? couldn't they have been puncturing?