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