I could unhinge you could unhinge he could unhinge we could unhinge you could unhinge they could unhinge
V-ing form
I could be unhinging you could be unhinging he could be unhinging we could be unhinging you could be unhinging they could be unhinging
Perfect
I could have unhinged you could have unhinged he could have unhinged we could have unhinged you could have unhinged they could have unhinged
V-ing perfect
I could have been unhinging you could have been unhinging he could have been unhinging we could have been unhinging you could have been unhinging they could have been unhinging
Negation
Simple form
I could not unhinge you could not unhinge he could not unhinge we could not unhinge you could not unhinge they could not unhinge
V-ing form
I could not be unhinging you could not be unhinging he could not be unhinging we could not be unhinging you could not be unhinging they could not be unhinging
Perfect
I could not have unhinged you could not have unhinged he could not have unhinged we could not have unhinged you could not have unhinged they could not have unhinged
V-ing perfect
I could not have been unhinging you could not have been unhinging he could not have been unhinging we could not have been unhinging you could not have been unhinging they could not have been unhinging
Interrogative form
Simple form
could I unhinge? could you unhinge? could he unhinge? could we unhinge? could you unhinge? could they unhinge?
V-ing form
could I be unhinging? could you be unhinging? could he be unhinging? could we be unhinging? could you be unhinging? could they be unhinging?
Perfect
could I have unhinged? could you have unhinged? could he have unhinged? could we have unhinged? could you have unhinged? could they have unhinged?
V-ing perfect
could I have been unhinging? could you have been unhinging? could he have been unhinging? could we have been unhinging? could you have been unhinging? could they have been unhinging?
Interro-negative form
Simple form
could I not unhinge? could you not unhinge? could he not unhinge? could we not unhinge? could you not unhinge? could they not unhinge?
V-ing form
could I not be unhinging? could you not be unhinging? could he not be unhinging? could we not be unhinging? could you not be unhinging? could they not be unhinging?
Perfect
could I not have unhinged? could you not have unhinged? could he not have unhinged? could we not have unhinged? could you not have unhinged? could they not have unhinged?
V-ing perfect
could I not have been unhinging? could you not have been unhinging? could he not have been unhinging? could we not have been unhinging? could you not have been unhinging? could they not have been unhinging?