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040000 tree 4480560b88a3b62ccc62296b4534361a7f848d47	cache
040000 tree 7bd148f1ad56425ce058bca0b5b1ab3cf3cc4d04	collect
040000 tree c03f679239f40374b111e1ab58605c907e5d9c47	escape
040000 tree 1d47c7ee28c6e319b09a543b2eec1d2ae340c4c4	io
040000 tree 9b310b8afe7e29304dc47ffe58dcf76be5a9d1e8	math
040000 tree 41fe0d727323e083dcb539c60e42ba11e6eb7b9c	primitives