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