040000 tree c8f13f4ef64e995bb6f0ab240c42fcdfe683d9b4	concepts.callable
040000 tree fa3b8f809fdfb3213ba0a0ad0ce9569512b1fb65	concepts.compare
040000 tree d521cc4278584d38676ec17e533d816dc3def89d	concepts.lang
040000 tree f943f864944b9c9f0b2a92b50ff3393d66dffeb9	concepts.object