C2123132222131133131121131211113313231322331333132322333133311311   >>    C212313222213113313112113121111331323132233133313232233313331131   <<    C2123132222131133131121131211113313231322331333132322333133311313   >>      C2123132222131133131121131211113313231322331333132322333133311312   >>