2
3
1.2
1.3
1.4
2.2 2.3
2.4
2.5
2.6
2.7
3.2
3.3
3.4
3.5
4.2
4.3
4.4
5.2
5.3
5.4
6.2
6.3
6.4
6.5
7.2
7.3