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