map = {["#326"]={A={66,66},B={95,95},H={98,98},P={96,96},X={76,76}},["#327"]={A={82,82},B={82,82},H={95,95},P={54,54},X={88,88}},["#328"]={A={59,59},B={64,64},H={93,93},P={58,58},X={80,80}}}
  allletters = {}
  outmap = {}
  
  for feature, submap in pairs(map) do
    f = otherresults[feature]
    if f == nil then error("Need recalc, waiting for "..feature) end
    _, _, value = string.find(f, ": ([0-9.]+)")
    if value ~= nil then
      value = tonumber(value)
      for letter, range in pairs(submap) do
        allletters[letter] = true
        if value < range[1] or value > range[2] then
          outmap[letter] = true -- can't be this letter
        end
      end
    end
  end
  
  candidates = {}
  for letter, _ in pairs(allletters) do
    if not outmap[letter] then
      table.insert(candidates, letter)
    end
  end
  
  if #candidates ~= 0 then
    return "Candidates: "..table.concat(candidates, ", ")
  end