output

$ ruby t.rb 
-> P#m
-> C#m
-> I#m
   D#m
<- I#m
<- C#m
<- P#m

t.rb

module P
  def m
    puts '-> P#m'
    super
    puts '<- P#m'
  end
end

module I
  def m
    puts '-> I#m'
    super
    puts '<- I#m'
  end
end

class D
  def m
    puts '   D#m'
  end
end

class C < D
  prepend P
  include I

  def m
    puts '-> C#m'
    super
    puts '<- C#m'
  end
end

C.new.m