C11111333133313232233133313331333133112111112113313233121111331123311   >>    C1111133313331323223313331333133313311211111211331323312111133112331   <<    C11111333133313232233133313331333133112111112113313233121111331123313   >>      C11111333133313232233133313331333133112111112113313233121111331123312   >>