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