class Yukicoder
  def initialize
    t = gets.to_i
    @cache_good = Hash.new
    @cache_problem = Hash.new

    t.times do
      s = gets.chomp
      size = s.size
      min_dist = Float::INFINITY

      0.upto(size - 7) do |i|
        dist1 = calc_dist_good(s[i..i+3])

        (i+4).upto(size - 7) do |j|
          dist2 = calc_dist_problem(s[j..j+6])

          min_dist = [min_dist, dist1 + dist2].min
        end
      end

      puts min_dist
    end
  end

  def calc_dist_good(str)
    return @cache_good[str] if @cache_good[str]
    dist = 0

    0.upto(3) do |index|
      dist += 1 if str[index] != 'good'[index]
    end

    @cache_good[str] = dist
  end

  def calc_dist_problem(str)
    return @cache_problem[str] if @cache_problem[str]
    dist = 0

    0.upto(6) do |index|
      dist += 1 if str[index] != 'problem'[index]
    end

    @cache_problem[str] = dist
  end
end

Yukicoder.new