Birthday Collisions

Section 1 (35 students):

      2 0211
      2 1209

Section 2 (50 students):

      2 0617
      2 1115
      2 1218

Section ALL (85 students):

      2 0126
      2 0211
      2 0704
      2 1115
      2 1205
      2 1209
      2 1218
      3 0617