33.1 problem 963
 33.2 problem 964
 33.3 problem 965
 33.4 problem 966
 33.5 problem 967
 33.6 problem 968
 33.7 problem 969
 33.8 problem 970
 33.9 problem 971
 33.10 problem 972
 33.11 problem 973
 33.12 problem 974
 33.13 problem 975
 33.14 problem 976
 33.15 problem 977
 33.16 problem 978
 33.17 problem 979
 33.18 problem 980
 33.19 problem 981
 33.20 problem 982
 33.21 problem 983
 33.22 problem 985
 33.23 problem 986
 33.24 problem 987
 33.25 problem 988
 33.26 problem 989
 33.27 problem 990
 33.28 problem 991
 33.29 problem 992
 33.30 problem 993
 33.31 problem 994
 33.32 problem 995