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