diff --git a/17/main.rb b/17/main.rb
index da1396c..1b67d4a 100755
--- a/17/main.rb
+++ b/17/main.rb
@@ -1,6 +1,7 @@
 #!/usr/bin/env ruby
 
 require "debug"
+DEBUG = true
 
 input = (ARGV.first.nil? ? DATA : ARGF)
   .readlines(chomp: true)
@@ -28,7 +29,7 @@ OPERANDS = [
 ]
 
 def execute(registers, program)
-  stdout = []
+  stdout, commands = Array.new, Array.new
 
   i = 0
   while i < program.size
@@ -43,31 +44,41 @@ def execute(registers, program)
       numerator = registers[:A]
       denominator = 2 ** combo_operand
       registers[:A] = numerator / denominator
+      commands << [:adv, numerator, denominator]
     when 1
       registers[:B] = registers[:B] ^ literal_operand
+      commands << [:bxl, literal_operand]
     when 2
       registers[:B] = combo_operand % 8
+      commands << [:bst, combo_operand % 8]
     when 3
       if registers[:A] == 0
-        :noop
+        commands << [:noop]
       else
         i = literal_operand
+        commands << [:jnz, literal_operand]
       end
     when 4
       registers[:B] = registers[:B] ^ registers[:C]
+      commands << [:bxc, registers[:B], registers[:C]]
     when 5
       stdout << combo_operand % 8
+      commands << [:out, combo_operand % 8]
     when 6
       numerator = registers[:A]
       denominator = 2 ** combo_operand
       registers[:B] = numerator / denominator
+      commands << [:bdv, numerator, denominator]
     when 7
       numerator = registers[:A]
       denominator = 2 ** combo_operand
       registers[:C] = numerator / denominator
+      commands << [:cdv, numerator, denominator]
     end
   end
 
+  p commands if DEBUG
+
   [registers, program, stdout.join(",")]
 end