C1111233131211111211113313331333132313231323223313331311331311233311   >>    C111123313121111121111331333133313231323132322331333131133131123331   <<    C1111233131211111211113313331333132313231323223313331311331311233313   >>      C1111233131211111211113313331333132313231323223313331311331311233312   >>