Hoofdstuk 10, opdracht 2

1. bwb o s io pv
2. bwb s bwb o pv
3. bwb s io o pv
4. bwb s io o bwb pv
5. bwb s bwb bwb pv
6. io.s o bw bwb pv
7. bwb bwb s pv
8. s io o bwb pv
9. s bwb bwb pv
10. bwb s io o bwb pv