C2123132222131133131121131211113313231322331333132322331333113122321   >>    C212313222213113313112113121111331323132233133313232233133311312232   <<    C2123132222131133131121131211113313231322331333132322331333113122323   >>      C2123132222131133131121131211113313231322331333132322331333113122322   >>