Challenging exercises Jaa Sulje 1/14. Exercise 14.11 Avaa lomake 1/14. Exercise 14.12 Avaa lomake 1/14. Exercise 14.13 Avaa lomake 1/14. Exercise 14.14 Avaa lomake 1/14. Exercise 14.15 Avaa lomake 1/14. Exercise 14.16 Avaa lomake 1/14. Exercise 14.17 Avaa lomake 1/14. Exercise 14.18 Avaa lomake