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