C1231221313231323131133131333132213231323123231323133313232132311   >>    C123122131323132313113313133313221323132312323132313331323213231   <<    C1231221313231323131133131333132213231323123231323133313232132313   >>      C1231221313231323131133131333132213231323123231323133313232132312   >>