I could pour you could pour she could pour we could pour you could pour they could pour
V-ing form
I could be pouring you could be pouring she could be pouring we could be pouring you could be pouring they could be pouring
Perfect
I could have poured you could have poured she could have poured we could have poured you could have poured they could have poured
V-ing perfect
I could have been pouring you could have been pouring she could have been pouring we could have been pouring you could have been pouring they could have been pouring
Negation
Simple form
I could not pour you could not pour she could not pour we could not pour you could not pour they could not pour
V-ing form
I could not be pouring you could not be pouring she could not be pouring we could not be pouring you could not be pouring they could not be pouring
Perfect
I could not have poured you could not have poured she could not have poured we could not have poured you could not have poured they could not have poured
V-ing perfect
I could not have been pouring you could not have been pouring she could not have been pouring we could not have been pouring you could not have been pouring they could not have been pouring
Interrogative form
Simple form
could I pour? could you pour? could she pour? could we pour? could you pour? could they pour?
V-ing form
could I be pouring? could you be pouring? could she be pouring? could we be pouring? could you be pouring? could they be pouring?
Perfect
could I have poured? could you have poured? could she have poured? could we have poured? could you have poured? could they have poured?
V-ing perfect
could I have been pouring? could you have been pouring? could she have been pouring? could we have been pouring? could you have been pouring? could they have been pouring?
Interro-negative form
Simple form
could I not pour? could you not pour? could she not pour? could we not pour? could you not pour? could they not pour?
V-ing form
could I not be pouring? could you not be pouring? could she not be pouring? could we not be pouring? could you not be pouring? could they not be pouring?
Perfect
could I not have poured? could you not have poured? could she not have poured? could we not have poured? could you not have poured? could they not have poured?
V-ing perfect
could I not have been pouring? could you not have been pouring? could she not have been pouring? could we not have been pouring? could you not have been pouring? could they not have been pouring?