C123122131323132313113313133313123231333132313112331323223313232211211311   >>    C12312213132313231311331313331312323133313231311233132322331323221121131   <<    C123122131323132313113313133313123231333132313112331323223313232211211313   >>      C123122131323132313113313133313123231333132313112331323223313232211211312   >>