C1111121111331311211331333133313331333131211113313232233231323311   >>    C111112111133131121133133313331333133313121111331323223323132331   <<    C1111121111331311211331333133313331333131211113313232233231323313   >>      C1111121111331311211331333133313331333131211113313232233231323312   >>