Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I could fluster fluster you could fluster fluster he could fluster fluster we could fluster fluster you could fluster fluster they could fluster fluster
V-ing form
I could be fluster flustering you could be fluster flustering he could be fluster flustering we could be fluster flustering you could be fluster flustering they could be fluster flustering
Perfect
I could have fluster flustered you could have fluster flustered he could have fluster flustered we could have fluster flustered you could have fluster flustered they could have fluster flustered
V-ing perfect
I could have been fluster flustering you could have been fluster flustering he could have been fluster flustering we could have been fluster flustering you could have been fluster flustering they could have been fluster flustering
Negation
Simple form
I could not fluster fluster you could not fluster fluster he could not fluster fluster we could not fluster fluster you could not fluster fluster they could not fluster fluster
V-ing form
I could not be fluster flustering you could not be fluster flustering he could not be fluster flustering we could not be fluster flustering you could not be fluster flustering they could not be fluster flustering
Perfect
I could not have fluster flustered you could not have fluster flustered he could not have fluster flustered we could not have fluster flustered you could not have fluster flustered they could not have fluster flustered
V-ing perfect
I could not have been fluster flustering you could not have been fluster flustering he could not have been fluster flustering we could not have been fluster flustering you could not have been fluster flustering they could not have been fluster flustering
Interrogative form
Simple form
could I fluster fluster? could you fluster fluster? could he fluster fluster? could we fluster fluster? could you fluster fluster? could they fluster fluster?
V-ing form
could I be fluster flustering? could you be fluster flustering? could he be fluster flustering? could we be fluster flustering? could you be fluster flustering? could they be fluster flustering?
Perfect
could I have fluster flustered? could you have fluster flustered? could he have fluster flustered? could we have fluster flustered? could you have fluster flustered? could they have fluster flustered?
V-ing perfect
could I have been fluster flustering? could you have been fluster flustering? could he have been fluster flustering? could we have been fluster flustering? could you have been fluster flustering? could they have been fluster flustering?
Interro-negative form
Simple form
could I not fluster fluster? could you not fluster fluster? could he not fluster fluster? could we not fluster fluster? could you not fluster fluster? could they not fluster fluster?
V-ing form
could I not be fluster flustering? could you not be fluster flustering? could he not be fluster flustering? could we not be fluster flustering? could you not be fluster flustering? could they not be fluster flustering?
Perfect
could I not have fluster flustered? could you not have fluster flustered? could he not have fluster flustered? could we not have fluster flustered? could you not have fluster flustered? could they not have fluster flustered?
V-ing perfect
could I not have been fluster flustering? could you not have been fluster flustering? could he not have been fluster flustering? could we not have been fluster flustering? could you not have been fluster flustering? could they not have been fluster flustering?