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