input = File.read("input-16.txt").strip.split(",")
#input = "s1,x3/4,pe/b".split(",")
matcher = /([s,p,x])(?:(\w*\/\w*)|(\w+))/
line = ('a'..'p').to_a
#line = ('a'..'e').to_a

input.each do |s|
  match_data = (s.match matcher).to_a
  match_data[1] = match_data[1].to_sym
  case match_data[1]
  when :s
    line.rotate! -(match_data[3].to_i)
  when :x
    positions = match_data[2].split "/"
    line[positions[0].to_i], line[positions[1].to_i] = line[positions[1].to_i], line[positions[0].to_i]
  when :p
    buds = match_data[2].split "/"
    index_0, index_1 = line.find_index(buds[0]), line.find_index(buds[1])
    line[index_0], line[index_1] = line[index_1], line[index_0]
  end
end

p line.join