040000 tree d925f9aaa9cec7bcd37b2b8b9cde99b3ed561d87	algebra
040000 tree 45bfad8572a240b43866d0c5091fa59094c2ba5e	jobgen
040000 tree cd28133e124761783367fd6a9a6fa2ac3113135a	optimizer
040000 tree 0210b07f93a4acf6f15c58c7ec27642554b033b8	translator