bug420596 78 B

12345678910
  1. =>(\+|-)(0[0-9]|1[0-1])
  2. +01
  3. -01
  4. +10
  5. -10
  6. =>[+-](0[0-9]|1[0-1])
  7. +01
  8. -01
  9. +10
  10. -10