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