C123122131323132313113313133313123231333132313112331323223313232233121   >>    C12312213132313231311331313331312323133313231311233132322331323223312   <<    C123122131323132313113313133313123231333132313112331323223313232233123   >>      C123122131323132313113313133313123231333132313112331323223313232233122   >>