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