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