040000 tree 812698f328baa074da8315cb77a60c13d0cc8d64	c
040000 tree 317d13c2c135a3a5f4924b10a83cc7152ab3dacb	common
040000 tree a1aca6780134ff55c346070e34e0fa2d66f4d10a	core
040000 tree a471bca25a6616a3333cd0f4b7dbf30f3c96c10f	example-lang
040000 tree 11970f76ec5afd2e6ef5d030062f867b0ef1b8bb	perl
040000 tree d67a86d32e1f1ff577b1c3a8630f0b9c98644538	ruby