C11112331312111112111133133313331333132323133313331333112121111132313231   >>    C1111233131211111211113313331333133313232313331333133311212111113231323   <<    C11112331312111112111133133313331333132323133313331333112121111132313233   >>      C11112331312111112111133133313331333132323133313331333112121111132313232   >>