C123122131323132313113313133313123231333132313112331323223313232233131231   >>    C12312213132313231311331313331312323133313231311233132322331323223313123   <<    C123122131323132313113313133313123231333132313112331323223313232233131233   >>      C123122131323132313113313133313123231333132313112331323223313232233131232   >>