I could receive you could receive she could receive we could receive you could receive they could receive
V-ing form
I could be receiving you could be receiving she could be receiving we could be receiving you could be receiving they could be receiving
Perfect
I could have received you could have received she could have received we could have received you could have received they could have received
V-ing perfect
I could have been receiving you could have been receiving she could have been receiving we could have been receiving you could have been receiving they could have been receiving
Negation
Simple form
I could not receive you could not receive she could not receive we could not receive you could not receive they could not receive
V-ing form
I could not be receiving you could not be receiving she could not be receiving we could not be receiving you could not be receiving they could not be receiving
Perfect
I could not have received you could not have received she could not have received we could not have received you could not have received they could not have received
V-ing perfect
I could not have been receiving you could not have been receiving she could not have been receiving we could not have been receiving you could not have been receiving they could not have been receiving
Interrogative form
Simple form
could I receive? could you receive? could she receive? could we receive? could you receive? could they receive?
V-ing form
could I be receiving? could you be receiving? could she be receiving? could we be receiving? could you be receiving? could they be receiving?
Perfect
could I have received? could you have received? could she have received? could we have received? could you have received? could they have received?
V-ing perfect
could I have been receiving? could you have been receiving? could she have been receiving? could we have been receiving? could you have been receiving? could they have been receiving?
Interro-negative form
Simple form
could I not receive? could you not receive? could she not receive? could we not receive? could you not receive? could they not receive?
V-ing form
could I not be receiving? could you not be receiving? could she not be receiving? could we not be receiving? could you not be receiving? could they not be receiving?
Perfect
could I not have received? could you not have received? could she not have received? could we not have received? could you not have received? could they not have received?
V-ing perfect
could I not have been receiving? could you not have been receiving? could she not have been receiving? could we not have been receiving? could you not have been receiving? could they not have been receiving?