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