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