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