C2123132222131133131121131211113313231322331333132233131133133313223321111   >>    C212313222213113313112113121111331323132233133313223313113313331322332111   <<    C2123132222131133131121131211113313231322331333132233131133133313223321113   >>      C2123132222131133131121131211113313231322331333132233131133133313223321112   >>