B33113313132313113313223313331323132333132313331311213331323133313232213223121   >>    B3311331313231311331322331333132313233313231333131121333132313331323221322312   <<    B33113313132313113313223313331323132333132313331311213331323133313232213223123   >>      B33113313132313113313223313331323132333132313331311213331323133313232213223122   >>