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