C11111333133313232233133313331333133313331312111133133312111133132233313121   >>    C1111133313331323223313331333133313331333131211113313331211113313223331312   <<    C11111333133313232233133313331333133313331312111133133312111133132233313123   >>      C11111333133313232233133313331333133313331312111133133312111133132233313122   >>