C11112331312111112111133133313331333133313331333133313331333132212111133231311   >>    C1111233131211111211113313331333133313331333133313331333133313221211113323131   <<    C11112331312111112111133133313331333133313331333133313331333132212111133231313   >>      C11112331312111112111133133313331333133313331333133313331333132212111133231312   >>