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  • 3+2
    5
  • 8-1
    7
  • 10+9
    19
  • 9-3
    6
  • 10-4
    6
  • 20-5
    15
  • 3-1
    2
  • 7+2
    9
  • 0+8
    8
  • 6-3
    3
  • 4+4
    8
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