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