C11111333133313232233133313331333131133132313311211111213331333131133113121   >>    C1111133313331323223313331333133313113313231331121111121333133313113311312   <<    C11111333133313232233133313331333131133132313311211111213331333131133113123   >>      C11111333133313232233133313331333131133132313311211111213331333131133113122   >>