I could spank you could spank he could spank we could spank you could spank they could spank
V-ing form
I could be spanking you could be spanking he could be spanking we could be spanking you could be spanking they could be spanking
Perfect
I could have spanked you could have spanked he could have spanked we could have spanked you could have spanked they could have spanked
V-ing perfect
I could have been spanking you could have been spanking he could have been spanking we could have been spanking you could have been spanking they could have been spanking
Negation
Simple form
I could not spank you could not spank he could not spank we could not spank you could not spank they could not spank
V-ing form
I could not be spanking you could not be spanking he could not be spanking we could not be spanking you could not be spanking they could not be spanking
Perfect
I could not have spanked you could not have spanked he could not have spanked we could not have spanked you could not have spanked they could not have spanked
V-ing perfect
I could not have been spanking you could not have been spanking he could not have been spanking we could not have been spanking you could not have been spanking they could not have been spanking
Interrogative form
Simple form
could I spank? could you spank? could he spank? could we spank? could you spank? could they spank?
V-ing form
could I be spanking? could you be spanking? could he be spanking? could we be spanking? could you be spanking? could they be spanking?
Perfect
could I have spanked? could you have spanked? could he have spanked? could we have spanked? could you have spanked? could they have spanked?
V-ing perfect
could I have been spanking? could you have been spanking? could he have been spanking? could we have been spanking? could you have been spanking? could they have been spanking?
Interro-negative form
Simple form
could I not spank? could you not spank? could he not spank? could we not spank? could you not spank? could they not spank?
V-ing form
could I not be spanking? could you not be spanking? could he not be spanking? could we not be spanking? could you not be spanking? could they not be spanking?
Perfect
could I not have spanked? could you not have spanked? could he not have spanked? could we not have spanked? could you not have spanked? could they not have spanked?
V-ing perfect
could I not have been spanking? could you not have been spanking? could he not have been spanking? could we not have been spanking? could you not have been spanking? could they not have been spanking?