• 36I19

  • 36J21

  • 48J21

  • 48J23


1st number : 2 × 2 = 4 × 3 = 12 × 4 = 48 Middle letter : A + 3 = D + 3 = G + 3 = J 3rd number : 11 + 2 = 13 + 4 = 17 + 6 = 23