I could bustle you could bustle he could bustle we could bustle you could bustle they could bustle
V-ing form
I could be bustling you could be bustling he could be bustling we could be bustling you could be bustling they could be bustling
Perfect
I could have bustled you could have bustled he could have bustled we could have bustled you could have bustled they could have bustled
V-ing perfect
I could have been bustling you could have been bustling he could have been bustling we could have been bustling you could have been bustling they could have been bustling
Negation
Simple form
I could not bustle you could not bustle he could not bustle we could not bustle you could not bustle they could not bustle
V-ing form
I could not be bustling you could not be bustling he could not be bustling we could not be bustling you could not be bustling they could not be bustling
Perfect
I could not have bustled you could not have bustled he could not have bustled we could not have bustled you could not have bustled they could not have bustled
V-ing perfect
I could not have been bustling you could not have been bustling he could not have been bustling we could not have been bustling you could not have been bustling they could not have been bustling
Interrogative form
Simple form
could I bustle? could you bustle? could he bustle? could we bustle? could you bustle? could they bustle?
V-ing form
could I be bustling? could you be bustling? could he be bustling? could we be bustling? could you be bustling? could they be bustling?
Perfect
could I have bustled? could you have bustled? could he have bustled? could we have bustled? could you have bustled? could they have bustled?
V-ing perfect
could I have been bustling? could you have been bustling? could he have been bustling? could we have been bustling? could you have been bustling? could they have been bustling?
Interro-negative form
Simple form
could I not bustle? could you not bustle? could he not bustle? could we not bustle? could you not bustle? could they not bustle?
V-ing form
could I not be bustling? could you not be bustling? could he not be bustling? could we not be bustling? could you not be bustling? could they not be bustling?
Perfect
could I not have bustled? could you not have bustled? could he not have bustled? could we not have bustled? could you not have bustled? could they not have bustled?
V-ing perfect
could I not have been bustling? could you not have been bustling? could he not have been bustling? could we not have been bustling? could you not have been bustling? could they not have been bustling?