C1231221313231323131133131333132213231323123231323133313232213111221   >>    C123122131323132313113313133313221323132312323132313331323221311122   <<    C1231221313231323131133131333132213231323123231323133313232213111223   >>      C1231221313231323131133131333132213231323123231323133313232213111222   >>