040000 tree ec1dacfb4803d843ef91622eeda6f38b6007a931	concept.equiv
040000 tree dba1183244dc9ad4eb2a36ec848832574b3f1b05	concept.invocable
040000 tree 46c5d82652d3de4fa2961e62ef80989affa4e160	concept.predicate
040000 tree 1bf4d3a61a8d27d276ed4eb72cbc8224772bb2fc	concept.regularinvocable
040000 tree bb8f9d9e4c3a9a1d70c1f06e8f2352926c2c3789	concept.relation
040000 tree 5002ab278eb4e162da4a76b342409cfbe4135d66	concept.strictweakorder