B33113313132313113313223313331323331313331322331333132333132313231313112121   >>    B3311331313231311331322331333132333131333132233133313233313231323131311212   <<    B33113313132313113313223313331323331313331322331333132333132313231313112123   >>      B33113313132313113313223313331323331313331322331333132333132313231313112122   >>