040000 tree 27ea948476653e6c739cbe4d806983e209d051c4	algebra
040000 tree d11a4a0eea5a01175b62990aadba5b2ecbe30038	jobgen
040000 tree 243c956bd77f521e867e130c4a125f1078c22f4a	optimizer
040000 tree aa07a7e82fdf5ed3f7803c13b00fb95d3df883cc	translator