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