I could flyblow you could flyblow he could flyblow we could flyblow you could flyblow they could flyblow
V-ing form
I could be flyblowing you could be flyblowing he could be flyblowing we could be flyblowing you could be flyblowing they could be flyblowing
Perfect
I could have flyblown you could have flyblown he could have flyblown we could have flyblown you could have flyblown they could have flyblown
V-ing perfect
I could have been flyblowing you could have been flyblowing he could have been flyblowing we could have been flyblowing you could have been flyblowing they could have been flyblowing
Negation
Simple form
I could not flyblow you could not flyblow he could not flyblow we could not flyblow you could not flyblow they could not flyblow
V-ing form
I could not be flyblowing you could not be flyblowing he could not be flyblowing we could not be flyblowing you could not be flyblowing they could not be flyblowing
Perfect
I could not have flyblown you could not have flyblown he could not have flyblown we could not have flyblown you could not have flyblown they could not have flyblown
V-ing perfect
I could not have been flyblowing you could not have been flyblowing he could not have been flyblowing we could not have been flyblowing you could not have been flyblowing they could not have been flyblowing
Interrogative form
Simple form
could I flyblow? could you flyblow? could he flyblow? could we flyblow? could you flyblow? could they flyblow?
V-ing form
could I be flyblowing? could you be flyblowing? could he be flyblowing? could we be flyblowing? could you be flyblowing? could they be flyblowing?
Perfect
could I have flyblown? could you have flyblown? could he have flyblown? could we have flyblown? could you have flyblown? could they have flyblown?
V-ing perfect
could I have been flyblowing? could you have been flyblowing? could he have been flyblowing? could we have been flyblowing? could you have been flyblowing? could they have been flyblowing?
Interro-negative form
Simple form
could I not flyblow? could you not flyblow? could he not flyblow? could we not flyblow? could you not flyblow? could they not flyblow?
V-ing form
could I not be flyblowing? could you not be flyblowing? could he not be flyblowing? could we not be flyblowing? could you not be flyblowing? could they not be flyblowing?
Perfect
could I not have flyblown? could you not have flyblown? could he not have flyblown? could we not have flyblown? could you not have flyblown? could they not have flyblown?
V-ing perfect
could I not have been flyblowing? could you not have been flyblowing? could he not have been flyblowing? could we not have been flyblowing? could you not have been flyblowing? could they not have been flyblowing?