C11111333133313232233133313331333133112111112113313331312111113331333221123311   >>    C1111133313331323223313331333133313311211111211331333131211111333133322112331   <<    C11111333133313232233133313331333133112111112113313331312111113331333221123313   >>      C11111333133313232233133313331333133112111112113313331312111113331333221123312   >>