C121212231313232233131323223313233313233313222213231323132313113311   >>    C12121223131323223313132322331323331323331322221323132313231311331   <<    C121212231313232233131323223313233313233313222213231323132313113313   >>      C121212231313232233131323223313233313233313222213231323132313113312   >>