loop_
        _ihm_non_poly_feature.ordinal_id
        _ihm_non_poly_feature.feature_id
        _ihm_non_poly_feature.entity_id
        _ihm_non_poly_feature.asym_id
        _ihm_non_poly_feature.comp_id
        _ihm_non_poly_feature.atom_id
          1  1  6  F  FES  FE1
          2  2  6  F  FES  FE2
          3  3  6  F  FES  S1
          4  4  6  F  FES  S2
         # ...  abbreviated ...