B33113313132313113313223313331311331323331323331333132233132313231311221123121   >>    B3311331313231311331322331333131133132333132333133313223313231323131122112312   <<    B33113313132313113313223313331311331323331323331333132233132313231311221123123   >>      B33113313132313113313223313331311331323331323331333132233132313231311221123122   >>