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