040000 tree ec1dacfb4803d843ef91622eeda6f38b6007a931	concept.equiv
040000 tree 59d4be4991fadbafa9c79e12a03d74749c720af8	concept.invocable
040000 tree 46c5d82652d3de4fa2961e62ef80989affa4e160	concept.predicate
040000 tree 85fcab247b28844fc8c23c0fdf45951ec30ce8da	concept.regularinvocable
040000 tree bb8f9d9e4c3a9a1d70c1f06e8f2352926c2c3789	concept.relation
040000 tree 5002ab278eb4e162da4a76b342409cfbe4135d66	concept.strictweakorder