I'd be backcombing you'd be backcombing he'd be backcombing we'd be backcombing you'd be backcombing they'd be backcombing
Perfect
I should've backcombed you should've backcombed he should've backcombed we should've backcombed you should've backcombed they should've backcombed
V-ing perfect
I should've been backcombing you should've been backcombing he should've been backcombing we should've been backcombing you should've been backcombing they should've been backcombing
Negation
Simple form
I shouldn't backcomb you shouldn't backcomb he shouldn't backcomb we shouldn't backcomb you shouldn't backcomb they shouldn't backcomb
V-ing form
I shouldn't be backcombing you shouldn't be backcombing he shouldn't be backcombing we shouldn't be backcombing you shouldn't be backcombing they shouldn't be backcombing
Perfect
I shouldn't have backcombed you shouldn't have backcombed he shouldn't have backcombed we shouldn't have backcombed you shouldn't have backcombed they shouldn't have backcombed
V-ing perfect
I shouldn't have been backcombing you shouldn't have been backcombing he shouldn't have been backcombing we shouldn't have been backcombing you shouldn't have been backcombing they shouldn't have been backcombing
Interrogative form
Simple form
should I backcomb? should you backcomb? should he backcomb? should we backcomb? should you backcomb? should they backcomb?
V-ing form
should I be backcombing? should you be backcombing? should he be backcombing? should we be backcombing? should you be backcombing? should they be backcombing?
Perfect
should I have backcombed? should you have backcombed? should he have backcombed? should we have backcombed? should you have backcombed? should they have backcombed?
V-ing perfect
should I have been backcombing? should you have been backcombing? should he have been backcombing? should we have been backcombing? should you have been backcombing? should they have been backcombing?
Interro-negative form
Simple form
shouldn't I backcomb? shouldn't you backcomb? shouldn't he backcomb? shouldn't we backcomb? shouldn't you backcomb? shouldn't they backcomb?
V-ing form
shouldn't I be backcombing? shouldn't you be backcombing? shouldn't he be backcombing? shouldn't we be backcombing? shouldn't you be backcombing? shouldn't they be backcombing?
Perfect
shouldn't I have backcombed? shouldn't you have backcombed? shouldn't he have backcombed? shouldn't we have backcombed? shouldn't you have backcombed? shouldn't they have backcombed?
V-ing perfect
shouldn't I have been backcombing? shouldn't you have been backcombing? shouldn't he have been backcombing? shouldn't we have been backcombing? shouldn't you have been backcombing? shouldn't they have been backcombing?