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040000 tree 2c26bdec8a7594d511ae3670577e5210c58705b3	base
040000 tree 46c5980e6d527b7ae15fb49c3dedcd52ebc57726	collect
040000 tree 934f4e2e0ba15da7fb12c3419f4148eb170f261b	io
040000 tree a822d805df42358bed4ce1d8afeef1de64a1e848	primitives
040000 tree b7e532c13c987030370b1bb3e8cceead7a913948	util