C1123112323131323132313132313232233132333132322131323132313222311   >>    C112311232313132313231313231323223313233313232213132313231322231   <<    C1123112323131323132313132313232233132333132322131323132313222313   >>      C1123112323131323132313132313232233132333132322131323132313222312   >>