C11111333133313232233133313331333131133132233131133131333112113121   >>    C1111133313331323223313331333133313113313223313113313133311211312   <<    C11111333133313232233133313331333131133132233131133131333112113123   >>      C11111333133313232233133313331333131133132233131133131333112113122   >>