ln --symbolic ../../bysemester/f07/ai.pdf  ../../byexam/ai/f07.pdf
  ln --symbolic ../../bysemester/f07/ca.pdf  ../../byexam/ca/f07.pdf
  ln --symbolic ../../bysemester/f07/db.pdf  ../../byexam/db/f07.pdf
# ln --symbolic ../../bysemester/f07/gr.pdf  ../../byexam/gr/f07.pdf
  ln --symbolic ../../bysemester/f07/fc.pdf  ../../byexam/fc/f07.pdf
  ln --symbolic ../../bysemester/f07/mp.pdf  ../../byexam/mp/f07.pdf
# ln --symbolic ../../bysemester/f07/na.pdf  ../../byexam/na/f07.pdf
# ln --symbolic ../../bysemester/f07/os.pdf  ../../byexam/os/f07.pdf
  ln --symbolic ../../bysemester/f07/pl.pdf   ../../byexam/pl/f07.pdf
  ln --symbolic ../../bysemester/f07/net.pdf   ../../byexam/net/f07.pdf