#!/usr/bin/env ruby
# -*- coding: utf-8 -*-
require 'csv'
CSV.open("output.csv", "w") do |csv|
  csv << ["a", "b", "c", "d"]
  csv << [1, 2, 3, 4]
  csv << ["プログラミング", "漢字", "算数", "英語", "ひらがな練習"]
end