C11112331312111112111133133313331312111111322331333133313231313233313221121   >>    C1111233131211111211113313331333131211111132233133313331323131323331322112   <<    C11112331312111112111133133313331312111111322331333133313231313233313221123   >>      C11112331312111112111133133313331312111111322331333133313231313233313221122   >>