I could branch you could branch she could branch we could branch you could branch they could branch
V-ing form
I could be branching you could be branching she could be branching we could be branching you could be branching they could be branching
Perfect
I could have branched you could have branched she could have branched we could have branched you could have branched they could have branched
V-ing perfect
I could have been branching you could have been branching she could have been branching we could have been branching you could have been branching they could have been branching
Negation
Simple form
I could not branch you could not branch she could not branch we could not branch you could not branch they could not branch
V-ing form
I could not be branching you could not be branching she could not be branching we could not be branching you could not be branching they could not be branching
Perfect
I could not have branched you could not have branched she could not have branched we could not have branched you could not have branched they could not have branched
V-ing perfect
I could not have been branching you could not have been branching she could not have been branching we could not have been branching you could not have been branching they could not have been branching
Interrogative form
Simple form
could I branch? could you branch? could she branch? could we branch? could you branch? could they branch?
V-ing form
could I be branching? could you be branching? could she be branching? could we be branching? could you be branching? could they be branching?
Perfect
could I have branched? could you have branched? could she have branched? could we have branched? could you have branched? could they have branched?
V-ing perfect
could I have been branching? could you have been branching? could she have been branching? could we have been branching? could you have been branching? could they have been branching?
Interro-negative form
Simple form
could I not branch? could you not branch? could she not branch? could we not branch? could you not branch? could they not branch?
V-ing form
could I not be branching? could you not be branching? could she not be branching? could we not be branching? could you not be branching? could they not be branching?
Perfect
could I not have branched? could you not have branched? could she not have branched? could we not have branched? could you not have branched? could they not have branched?
V-ing perfect
could I not have been branching? could you not have been branching? could she not have been branching? could we not have been branching? could you not have been branching? could they not have been branching?