29.1.1 problem 0
29.1.2 problem 1
29.1.3 problem 2
29.1.4 problem 3
29.1.5 problem 4
29.1.6 problem 5
29.1.7 problem 6
29.1.8 problem 7
29.1.9 problem 8
29.1.10 problem 9
29.1.11 problem 10
29.1.12 problem 11
29.1.13 problem 12
29.1.14 problem 13
29.1.15 problem 14
29.1.16 problem 15
29.1.17 problem 16
29.1.18 problem 17
29.1.19 problem 18
29.1.20 problem 19
29.1.21 problem 20
29.1.22 problem 21
29.1.23 problem 22
29.1.24 problem 23
29.1.25 problem 24
29.1.26 problem 25