C11112331333132311331333133313331323133313231131211113313223313123121   >>    C1111233133313231133133313331333132313331323113121111331322331312312   <<    C11112331333132311331333133313331323133313231131211113313223313123123   >>      C11112331333132311331333133313331323133313231131211113313223313123122   >>