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