I could segregate you could segregate he could segregate we could segregate you could segregate they could segregate
V-ing form
I could be segregating you could be segregating he could be segregating we could be segregating you could be segregating they could be segregating
Perfect
I could have segregated you could have segregated he could have segregated we could have segregated you could have segregated they could have segregated
V-ing perfect
I could have been segregating you could have been segregating he could have been segregating we could have been segregating you could have been segregating they could have been segregating
Negation
Simple form
I could not segregate you could not segregate he could not segregate we could not segregate you could not segregate they could not segregate
V-ing form
I could not be segregating you could not be segregating he could not be segregating we could not be segregating you could not be segregating they could not be segregating
Perfect
I could not have segregated you could not have segregated he could not have segregated we could not have segregated you could not have segregated they could not have segregated
V-ing perfect
I could not have been segregating you could not have been segregating he could not have been segregating we could not have been segregating you could not have been segregating they could not have been segregating
Interrogative form
Simple form
could I segregate? could you segregate? could he segregate? could we segregate? could you segregate? could they segregate?
V-ing form
could I be segregating? could you be segregating? could he be segregating? could we be segregating? could you be segregating? could they be segregating?
Perfect
could I have segregated? could you have segregated? could he have segregated? could we have segregated? could you have segregated? could they have segregated?
V-ing perfect
could I have been segregating? could you have been segregating? could he have been segregating? could we have been segregating? could you have been segregating? could they have been segregating?
Interro-negative form
Simple form
could I not segregate? could you not segregate? could he not segregate? could we not segregate? could you not segregate? could they not segregate?
V-ing form
could I not be segregating? could you not be segregating? could he not be segregating? could we not be segregating? could you not be segregating? could they not be segregating?
Perfect
could I not have segregated? could you not have segregated? could he not have segregated? could we not have segregated? could you not have segregated? could they not have segregated?
V-ing perfect
could I not have been segregating? could you not have been segregating? could he not have been segregating? could we not have been segregating? could you not have been segregating? could they not have been segregating?