I could pray you could pray she could pray we could pray you could pray they could pray
V-ing form
I could be praying you could be praying she could be praying we could be praying you could be praying they could be praying
Perfect
I could have prayed you could have prayed she could have prayed we could have prayed you could have prayed they could have prayed
V-ing perfect
I could have been praying you could have been praying she could have been praying we could have been praying you could have been praying they could have been praying
Negation
Simple form
I could not pray you could not pray she could not pray we could not pray you could not pray they could not pray
V-ing form
I could not be praying you could not be praying she could not be praying we could not be praying you could not be praying they could not be praying
Perfect
I could not have prayed you could not have prayed she could not have prayed we could not have prayed you could not have prayed they could not have prayed
V-ing perfect
I could not have been praying you could not have been praying she could not have been praying we could not have been praying you could not have been praying they could not have been praying
Interrogative form
Simple form
could I pray? could you pray? could she pray? could we pray? could you pray? could they pray?
V-ing form
could I be praying? could you be praying? could she be praying? could we be praying? could you be praying? could they be praying?
Perfect
could I have prayed? could you have prayed? could she have prayed? could we have prayed? could you have prayed? could they have prayed?
V-ing perfect
could I have been praying? could you have been praying? could she have been praying? could we have been praying? could you have been praying? could they have been praying?
Interro-negative form
Simple form
could I not pray? could you not pray? could she not pray? could we not pray? could you not pray? could they not pray?
V-ing form
could I not be praying? could you not be praying? could she not be praying? could we not be praying? could you not be praying? could they not be praying?
Perfect
could I not have prayed? could you not have prayed? could she not have prayed? could we not have prayed? could you not have prayed? could they not have prayed?
V-ing perfect
could I not have been praying? could you not have been praying? could she not have been praying? could we not have been praying? could you not have been praying? could they not have been praying?