C31232233133313221211113313331333132313331322121111121111333133313123121   >>    C3123223313331322121111331333133313231333132212111112111133313331312312   <<    C31232233133313221211113313331333132313331322121111121111333133313123123   >>      C31232233133313221211113313331333132313331322121111121111333133313123122   >>