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