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