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040000 tree f21cf959ce732927189debdb6a5bb41d5b088e8b	elf
040000 tree a6b49cb6f5bdd994fc8869090f6adcd7827c81c5	gosym
040000 tree 413b9d533040906ef628a9ff749e2788d047f701	macho
040000 tree 84a3bfdb6db3b7bd3678f41703c7fbd5c8d95bc0	pe
040000 tree c0fe89c7ba69d4edd1e155c6bed2b026bf8f1e49	plan9obj