I could bargain you could bargain he could bargain we could bargain you could bargain they could bargain
V-ing form
I could be bargaining you could be bargaining he could be bargaining we could be bargaining you could be bargaining they could be bargaining
Perfect
I could have bargained you could have bargained he could have bargained we could have bargained you could have bargained they could have bargained
V-ing perfect
I could have been bargaining you could have been bargaining he could have been bargaining we could have been bargaining you could have been bargaining they could have been bargaining
Negation
Simple form
I couldn't bargain you couldn't bargain he couldn't bargain we couldn't bargain you couldn't bargain they couldn't bargain
V-ing form
I couldn't be bargaining you couldn't be bargaining he couldn't be bargaining we couldn't be bargaining you couldn't be bargaining they couldn't be bargaining
Perfect
I couldn't have bargained you couldn't have bargained he couldn't have bargained we couldn't have bargained you couldn't have bargained they couldn't have bargained
V-ing perfect
I couldn't have been bargaining you couldn't have been bargaining he couldn't have been bargaining we couldn't have been bargaining you couldn't have been bargaining they couldn't have been bargaining
Interrogative form
Simple form
could I bargain? could you bargain? could he bargain? could we bargain? could you bargain? could they bargain?
V-ing form
could I be bargaining? could you be bargaining? could he be bargaining? could we be bargaining? could you be bargaining? could they be bargaining?
Perfect
could I have bargained? could you have bargained? could he have bargained? could we have bargained? could you have bargained? could they have bargained?
V-ing perfect
could I have been bargaining? could you have been bargaining? could he have been bargaining? could we have been bargaining? could you have been bargaining? could they have been bargaining?
Interro-negative form
Simple form
couldn't I bargain? couldn't you bargain? couldn't he bargain? couldn't we bargain? couldn't you bargain? couldn't they bargain?
V-ing form
couldn't I be bargaining? couldn't you be bargaining? couldn't he be bargaining? couldn't we be bargaining? couldn't you be bargaining? couldn't they be bargaining?
Perfect
couldn't I have bargained? couldn't you have bargained? couldn't he have bargained? couldn't we have bargained? couldn't you have bargained? couldn't they have bargained?
V-ing perfect
couldn't I have been bargaining? couldn't you have been bargaining? couldn't he have been bargaining? couldn't we have been bargaining? couldn't you have been bargaining? couldn't they have been bargaining?