C2123132222131133131121131211113313333133313331333132233133313223321211   >>    C212313222213113313112113121111331333313331333133313223313331322332121   <<    C2123132222131133131121131211113313333133313331333132233133313223321213   >>      C2123132222131133131121131211113313333133313331333132233133313223321212   >>