I could pod you could pod he could pod we could pod you could pod they could pod
V-ing form
I could be podding you could be podding he could be podding we could be podding you could be podding they could be podding
Perfect
I could have podded you could have podded he could have podded we could have podded you could have podded they could have podded
V-ing perfect
I could have been podding you could have been podding he could have been podding we could have been podding you could have been podding they could have been podding
Negation
Simple form
I could not pod you could not pod he could not pod we could not pod you could not pod they could not pod
V-ing form
I could not be podding you could not be podding he could not be podding we could not be podding you could not be podding they could not be podding
Perfect
I could not have podded you could not have podded he could not have podded we could not have podded you could not have podded they could not have podded
V-ing perfect
I could not have been podding you could not have been podding he could not have been podding we could not have been podding you could not have been podding they could not have been podding
Interrogative form
Simple form
could I pod? could you pod? could he pod? could we pod? could you pod? could they pod?
V-ing form
could I be podding? could you be podding? could he be podding? could we be podding? could you be podding? could they be podding?
Perfect
could I have podded? could you have podded? could he have podded? could we have podded? could you have podded? could they have podded?
V-ing perfect
could I have been podding? could you have been podding? could he have been podding? could we have been podding? could you have been podding? could they have been podding?
Interro-negative form
Simple form
could I not pod? could you not pod? could he not pod? could we not pod? could you not pod? could they not pod?
V-ing form
could I not be podding? could you not be podding? could he not be podding? could we not be podding? could you not be podding? could they not be podding?
Perfect
could I not have podded? could you not have podded? could he not have podded? could we not have podded? could you not have podded? could they not have podded?
V-ing perfect
could I not have been podding? could you not have been podding? could he not have been podding? could we not have been podding? could you not have been podding? could they not have been podding?