Your goal is to find the secret four-color code. The following colors are possible: black, yellow, brown, red, white, purple.
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: ['yellow', 'white', 'purple', 'red']. Hint: three colors are in the secret code but in the wrong positions.
Guess: ['black', 'yellow', 'yellow', 'white']. Hint: three colors are in the correct positions.
Guess: ['black', 'red', 'yellow', 'white']. Hint: two colors are in the correct positions and two colors are in the secret code but in the wrong positions.
A B C D
red, brown, yellow, red black, yellow, red, white purple, yellow, red, yellow brown, red, red, black