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