I can backcomb you can backcomb she can backcomb we can backcomb you can backcomb they can backcomb
V-ing form
I can be backcombing you can be backcombing she can be backcombing we can be backcombing you can be backcombing they can be backcombing
Perfect
I can have backcombed you can have backcombed she 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 she 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 she cannot backcomb we cannot backcomb you cannot backcomb they cannot backcomb
V-ing form
I cannot be backcombing you cannot be backcombing she cannot be backcombing we cannot be backcombing you cannot be backcombing they cannot be backcombing
Perfect
I cannot have backcombed you cannot have backcombed she 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 she 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 she backcomb? can we backcomb? can you backcomb? can they backcomb?
V-ing form
can I be backcombing? can you be backcombing? can she be backcombing? can we be backcombing? can you be backcombing? can they be backcombing?
Perfect
can I have backcombed? can you have backcombed? can she 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 she 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 she 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 she 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 she 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 she not have been backcombing? can we not have been backcombing? can you not have been backcombing? can they not have been backcombing?