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