C121212231313232233131323223313233313233313222213231323132322111   >>    C12121223131323223313132322331323331323331322221323132313232211   <<    C121212231313232233131323223313233313233313222213231323132322113   >>      C121212231313232233131323223313233313233313222213231323132322112   >>