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