C111123313121111121111331333133313331323221211113313231333112211232322311   >>    C11112331312111112111133133313331333132322121111331323133311221123232231   <<    C111123313121111121111331333133313331323221211113313231333112211232322313   >>      C111123313121111121111331333133313331323221211113313231333112211232322312   >>