I could scuttle you could scuttle he could scuttle we could scuttle you could scuttle they could scuttle
V-ing form
I could be scuttling you could be scuttling he could be scuttling we could be scuttling you could be scuttling they could be scuttling
Perfect
I could have scuttled you could have scuttled he could have scuttled we could have scuttled you could have scuttled they could have scuttled
V-ing perfect
I could have been scuttling you could have been scuttling he could have been scuttling we could have been scuttling you could have been scuttling they could have been scuttling
Negation
Simple form
I could not scuttle you could not scuttle he could not scuttle we could not scuttle you could not scuttle they could not scuttle
V-ing form
I could not be scuttling you could not be scuttling he could not be scuttling we could not be scuttling you could not be scuttling they could not be scuttling
Perfect
I could not have scuttled you could not have scuttled he could not have scuttled we could not have scuttled you could not have scuttled they could not have scuttled
V-ing perfect
I could not have been scuttling you could not have been scuttling he could not have been scuttling we could not have been scuttling you could not have been scuttling they could not have been scuttling
Interrogative form
Simple form
could I scuttle? could you scuttle? could he scuttle? could we scuttle? could you scuttle? could they scuttle?
V-ing form
could I be scuttling? could you be scuttling? could he be scuttling? could we be scuttling? could you be scuttling? could they be scuttling?
Perfect
could I have scuttled? could you have scuttled? could he have scuttled? could we have scuttled? could you have scuttled? could they have scuttled?
V-ing perfect
could I have been scuttling? could you have been scuttling? could he have been scuttling? could we have been scuttling? could you have been scuttling? could they have been scuttling?
Interro-negative form
Simple form
could I not scuttle? could you not scuttle? could he not scuttle? could we not scuttle? could you not scuttle? could they not scuttle?
V-ing form
could I not be scuttling? could you not be scuttling? could he not be scuttling? could we not be scuttling? could you not be scuttling? could they not be scuttling?
Perfect
could I not have scuttled? could you not have scuttled? could he not have scuttled? could we not have scuttled? could you not have scuttled? could they not have scuttled?
V-ing perfect
could I not have been scuttling? could you not have been scuttling? could he not have been scuttling? could we not have been scuttling? could you not have been scuttling? could they not have been scuttling?