Your goal is to find the secret four-color code. The following colors are possible: yellow, purple, brown, black, red, orange.
Some guesses have already been made. I will provide feedback for each guess made with which it is possible to unambigiously determine the secret code.

Previous Guesses:
Guess: ['brown', 'black', 'orange', 'purple']. Hint: two colors are in the secret code but in the wrong positions.
Guess: ['yellow', 'yellow', 'brown', 'black']. Hint: two colors are in the correct positions.
Guess: ['yellow', 'red', 'purple', 'black']. Hint: two colors are in the correct positions.
Guess: ['black', 'red', 'brown', 'black']. Hint: two colors are in the correct positions.
A B C D
yellow, red, brown, orange red, orange, orange, red black, black, red, brown black, black, purple, red