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