C222123232321333131133133313331333132313231322221231123313233311   >>    C22212323232133313113313331333133313231323132222123112331323331   <<    C222123232321333131133133313331333132313231322221231123313233313   >>      C222123232321333131133133313331333132313231322221231123313233312   >>