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