1. ⚫⚫⚪
2. ⚫⚫⚫
3. ⚪⚪⚫
4. ⚪⚪⚪
5. ⚫⚪⚪
6. ⚪⚪⚪
7. ⚪⚪⚫
8. ⚪⚫⚫
9. ⚪⚫⚪
10. ⚫⚫⚪
11. ⚪⚫⚫
12. ⚫⚪⚪
13. ⚪⚪⚫
14. ⚪⚫⚫
15. ⚫⚪⚪
16. ⚪⚪⚪
17. ⚫⚫⚪
18. ⚫⚫⚫
19. ⚪⚫⚫
20. ⚫⚫⚫
21. ⚫⚫⚪
22. ⚪⚫⚪
23. ⚫⚪⚪
24. ⚪⚪⚪
25. ⚪⚫⚪
26. ⚪⚫⚫
27. ⚪⚫⚪
28. ⚫⚫⚪
29. ⚪⚪⚫
30. ⚫⚫⚫
31. ⚪⚪⚪
32. ⚪⚪⚫
33. ⚫⚫⚫
34. ⚪⚫⚪
35. ⚫⚪⚫
36. ⚫⚫⚪

On the Subject of Valves

Xoooooooooooooooooooooooooor!

1. Find the sum of serial# digits in the list on the left and let current# be this combination. If the sum is 0, skip all steps and press down valves 1 and 3.

2. Take the first character of the serial#:

   • Number ⇒ move up by that many steps.
   • Letter ⇒ move down by A1Z26 % 10 steps.

   Let the combination given by the new position be new#.

   Compare current# and new# and look up the action in the table below.

   0 matches	Move one more in the direction moved; and reuse this table.
   1 match	current# = ~new#
   2 matches	current# = new#
   3 matches	Go to step 3.

   Repeat this for all characters in the serial#.

3. If the module’s knobs are silver: invert current#.
4. Submit module# ^ current# by pushing down the resulting white valves.

^	The xor operation. Using white as 1.
~	The bitwise negation. E.g. ~⚫⚪⚫= ⚪⚫⚪
module#	The colours of the valves on the module.