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