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