Challenging exercises Jaa Sulje 2/02. Exercise 2.27 Avaa lomake 2/02. Exercise 2.28 Avaa lomake 2/02. Exercise 2.29 Avaa lomake 2/02. Exercise 2.30 Avaa lomake 2/02. Exercise 2.31 Avaa lomake 2/02. Exercise 2.32 Avaa lomake 2/02. Exercise 2.34 Avaa lomake