I could rent you could rent she could rent we could rent you could rent they could rent
V-ing form
I could be renting you could be renting she could be renting we could be renting you could be renting they could be renting
Perfect
I could have rented you could have rented she could have rented we could have rented you could have rented they could have rented
V-ing perfect
I could have been renting you could have been renting she could have been renting we could have been renting you could have been renting they could have been renting
Negation
Simple form
I couldn't rent you couldn't rent she couldn't rent we couldn't rent you couldn't rent they couldn't rent
V-ing form
I couldn't be renting you couldn't be renting she couldn't be renting we couldn't be renting you couldn't be renting they couldn't be renting
Perfect
I couldn't have rented you couldn't have rented she couldn't have rented we couldn't have rented you couldn't have rented they couldn't have rented
V-ing perfect
I couldn't have been renting you couldn't have been renting she couldn't have been renting we couldn't have been renting you couldn't have been renting they couldn't have been renting
Interrogative form
Simple form
could I rent? could you rent? could she rent? could we rent? could you rent? could they rent?
V-ing form
could I be renting? could you be renting? could she be renting? could we be renting? could you be renting? could they be renting?
Perfect
could I have rented? could you have rented? could she have rented? could we have rented? could you have rented? could they have rented?
V-ing perfect
could I have been renting? could you have been renting? could she have been renting? could we have been renting? could you have been renting? could they have been renting?
Interro-negative form
Simple form
couldn't I rent? couldn't you rent? couldn't she rent? couldn't we rent? couldn't you rent? couldn't they rent?
V-ing form
couldn't I be renting? couldn't you be renting? couldn't she be renting? couldn't we be renting? couldn't you be renting? couldn't they be renting?
Perfect
couldn't I have rented? couldn't you have rented? couldn't she have rented? couldn't we have rented? couldn't you have rented? couldn't they have rented?
V-ing perfect
couldn't I have been renting? couldn't you have been renting? couldn't she have been renting? couldn't we have been renting? couldn't you have been renting? couldn't they have been renting?