JSON Logic | Show when more than 3 true

conditional.json

{
  ">=" : [
    {"reduce":[
      [
        {"if" : [{"var": "data.a"}, 1, 0]},
        {"if" : [{"var": "data.b"}, 1, 0]},
        {"if" : [{"var": "data.c"}, 1, 0]},
        {"if" : [{"var": "data.d"}, 1, 0]},
        {"if" : [{"var": "data.e"}, 1, 0]},
        {"if" : [{"var": "data.f"}, 1, 0]},
      ],
      {"+":[{"var":"current"}, {"var":"accumulator"}]},
      0
    ]}, 3
  ]
}