I could reed you could reed he could reed we could reed you could reed they could reed
V-ing form
I could be reeding you could be reeding he could be reeding we could be reeding you could be reeding they could be reeding
Perfect
I could have reeded you could have reeded he could have reeded we could have reeded you could have reeded they could have reeded
V-ing perfect
I could have been reeding you could have been reeding he could have been reeding we could have been reeding you could have been reeding they could have been reeding
Negation
Simple form
I could not reed you could not reed he could not reed we could not reed you could not reed they could not reed
V-ing form
I could not be reeding you could not be reeding he could not be reeding we could not be reeding you could not be reeding they could not be reeding
Perfect
I could not have reeded you could not have reeded he could not have reeded we could not have reeded you could not have reeded they could not have reeded
V-ing perfect
I could not have been reeding you could not have been reeding he could not have been reeding we could not have been reeding you could not have been reeding they could not have been reeding
Interrogative form
Simple form
could I reed? could you reed? could he reed? could we reed? could you reed? could they reed?
V-ing form
could I be reeding? could you be reeding? could he be reeding? could we be reeding? could you be reeding? could they be reeding?
Perfect
could I have reeded? could you have reeded? could he have reeded? could we have reeded? could you have reeded? could they have reeded?
V-ing perfect
could I have been reeding? could you have been reeding? could he have been reeding? could we have been reeding? could you have been reeding? could they have been reeding?
Interro-negative form
Simple form
could I not reed? could you not reed? could he not reed? could we not reed? could you not reed? could they not reed?
V-ing form
could I not be reeding? could you not be reeding? could he not be reeding? could we not be reeding? could you not be reeding? could they not be reeding?
Perfect
could I not have reeded? could you not have reeded? could he not have reeded? could we not have reeded? could you not have reeded? could they not have reeded?
V-ing perfect
could I not have been reeding? could you not have been reeding? could he not have been reeding? could we not have been reeding? could you not have been reeding? could they not have been reeding?