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