I could backcomb you could backcomb he could backcomb we could backcomb you could backcomb they could backcomb
V-ing form
I could be backcombing you could be backcombing he could be backcombing we could be backcombing you could be backcombing they could be backcombing
Perfect
I could have backcombed you could have backcombed he could have backcombed we could have backcombed you could have backcombed they could have backcombed
V-ing perfect
I could have been backcombing you could have been backcombing he could have been backcombing we could have been backcombing you could have been backcombing they could have been backcombing
Negation
Simple form
I could not backcomb you could not backcomb he could not backcomb we could not backcomb you could not backcomb they could not backcomb
V-ing form
I could not be backcombing you could not be backcombing he could not be backcombing we could not be backcombing you could not be backcombing they could not be backcombing
Perfect
I could not have backcombed you could not have backcombed he could not have backcombed we could not have backcombed you could not have backcombed they could not have backcombed
V-ing perfect
I could not have been backcombing you could not have been backcombing he could not have been backcombing we could not have been backcombing you could not have been backcombing they could not have been backcombing
Interrogative form
Simple form
could I backcomb? could you backcomb? could he backcomb? could we backcomb? could you backcomb? could they backcomb?
V-ing form
could I be backcombing? could you be backcombing? could he be backcombing? could we be backcombing? could you be backcombing? could they be backcombing?
Perfect
could I have backcombed? could you have backcombed? could he have backcombed? could we have backcombed? could you have backcombed? could they have backcombed?
V-ing perfect
could I have been backcombing? could you have been backcombing? could he have been backcombing? could we have been backcombing? could you have been backcombing? could they have been backcombing?
Interro-negative form
Simple form
could I not backcomb? could you not backcomb? could he not backcomb? could we not backcomb? could you not backcomb? could they not backcomb?
V-ing form
could I not be backcombing? could you not be backcombing? could he not be backcombing? could we not be backcombing? could you not be backcombing? could they not be backcombing?
Perfect
could I not have backcombed? could you not have backcombed? could he not have backcombed? could we not have backcombed? could you not have backcombed? could they not have backcombed?
V-ing perfect
could I not have been backcombing? could you not have been backcombing? could he not have been backcombing? could we not have been backcombing? could you not have been backcombing? could they not have been backcombing?