I could scutter you could scutter she could scutter we could scutter you could scutter they could scutter
V-ing form
I could be scuttering you could be scuttering she could be scuttering we could be scuttering you could be scuttering they could be scuttering
Perfect
I could have scuttered you could have scuttered she could have scuttered we could have scuttered you could have scuttered they could have scuttered
V-ing perfect
I could have been scuttering you could have been scuttering she could have been scuttering we could have been scuttering you could have been scuttering they could have been scuttering
Negation
Simple form
I could not scutter you could not scutter she could not scutter we could not scutter you could not scutter they could not scutter
V-ing form
I could not be scuttering you could not be scuttering she could not be scuttering we could not be scuttering you could not be scuttering they could not be scuttering
Perfect
I could not have scuttered you could not have scuttered she could not have scuttered we could not have scuttered you could not have scuttered they could not have scuttered
V-ing perfect
I could not have been scuttering you could not have been scuttering she could not have been scuttering we could not have been scuttering you could not have been scuttering they could not have been scuttering
Interrogative form
Simple form
could I scutter? could you scutter? could she scutter? could we scutter? could you scutter? could they scutter?
V-ing form
could I be scuttering? could you be scuttering? could she be scuttering? could we be scuttering? could you be scuttering? could they be scuttering?
Perfect
could I have scuttered? could you have scuttered? could she have scuttered? could we have scuttered? could you have scuttered? could they have scuttered?
V-ing perfect
could I have been scuttering? could you have been scuttering? could she have been scuttering? could we have been scuttering? could you have been scuttering? could they have been scuttering?
Interro-negative form
Simple form
could I not scutter? could you not scutter? could she not scutter? could we not scutter? could you not scutter? could they not scutter?
V-ing form
could I not be scuttering? could you not be scuttering? could she not be scuttering? could we not be scuttering? could you not be scuttering? could they not be scuttering?
Perfect
could I not have scuttered? could you not have scuttered? could she not have scuttered? could we not have scuttered? could you not have scuttered? could they not have scuttered?
V-ing perfect
could I not have been scuttering? could you not have been scuttering? could she not have been scuttering? could we not have been scuttering? could you not have been scuttering? could they not have been scuttering?