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