class Calc0150
  def initialize(args)
    args = args.map { |l| l.chomp.split(/\s+/) }
    @t = args.shift.first.to_i
    @ss = args.map(&:first)
  end

  def calc(s)
    dg = (0..(s.size - 11)).map { |k| distance(s[k, 4], "good") }
    dp = (0..(s.size - 7)).map { |k| distance(s[k, 7], "problem") }

    (0..s.size - 11).map { |k|
      ((k + 4)..s.size - 7).map { |m|
        dg[k] + dp[m]
      }.min
    }.min
  end

  def distance(s1, s2)
    s1.split(//).zip(s2.split(//)).count { |c1, c2| c1 != c2 }
  end

  def run
    @ss.map { |s| calc(s) }
  end
end

puts Calc0150.new(STDIN.readlines).run if __FILE__ == $0