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