C2123132222131133131121131211113313231322331333132322331333113312121   >>    C212313222213113313112113121111331323132233133313232233133311331212   <<    C2123132222131133131121131211113313231322331333132322331333113312123   >>      C2123132222131133131121131211113313231322331333132322331333113312122   >>