C2123132222131133131121131211113313333133313331333132233133313223321111   >>    C212313222213113313112113121111331333313331333133313223313331322332111   <<    C2123132222131133131121131211113313333133313331333132233133313223321113   >>      C2123132222131133131121131211113313333133313331333132233133313223321112   >>